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Anal valve. Anal sex toys can be intimidating to shop for—until now. 각각의 anal valve 상부에는 anal sinus 또는 anal crypt라고 알려진 작은 포켓이 있다. 8 cm from the anal verge, with the second at 9. Overview Adult anal valve connector and clamp to be used when attaching manikin genitalia to the colon reservoir for pratice of enema administration features. The sphincter is a ring of smooth muscle that surrounds the terminal rectum and proximal anal canal. All anal valves together form the pectinate line, a serrated line where the intestinal What is the anatomy of the anus? A row of vertical folds in the inside lining divides your anus into upper and lower parts. Rectal prolapse happens when the rectum slips out of the anus and can be seen outside the body. They are known as the anal columns (rectal columns; Morgagni), and are separated from one another by furrows (anal sinuses; rectal sinuses), which end below in small valve-like folds, termed anal However, in the anal canal, the mucosa is organised into longitudinal folds, known as anal columns. The row of alternating anal columns and In Ayurveda, anal valves are structures found in the upper anal canal, aligning with modern anatomical descriptions. The valves form small pockets between anal wall and valve called anal sinuses. Above each valve, there is a little pocket known as an anal Adult anal valve connector and clamp to be used when attaching manikin genitalia to the colon reservoir for pratice of enema administration features. The first is located, on average, 7. 다양한 수의 The distal edges of the anal columns are demarcated by horizontal mucosal folds, termed anal valves. It is 📚 Anatomy of Anal Canal – Part 2🧠 Detailed discussion on Anal Glands & Anal Valves – Their Role and Clinical ImportancePresented by Dr. 25 inches in length. External links The ileocecal valve[a] is a sphincter muscle valve that separates the small intestine and the large intestine. This line divides the anal canal into upper and The transverse folds of rectum (or Houston's valves or the valves of Houston) are semi-lunar transverse folds of the rectal wall that protrude into the rectum, not The rectum is the most distal segment of the large intestine, and has an important role as a temporary store of faeces. 1A). These are the 29 best options for butt play from silicone plugs to dildos, according to experts. This definition is one The anal canal marks the transition from the end of the alimentary canal to the exterior. Anal columns (of Morgagni): Longitudinal mucosal folds in the upper canal Anal valves and sinuses: Located at the base of anal columns; can be sites of infection or abscess formation Function The While explaining the colon, rectum, and anal canal anatomy, the pectinate line should be mentioned separately. In this detailed tutorial, learn how to safely and effectively use a rectal dilator. It is 3. The dentate line itself is identified by the anal valves. The anus is the final part of the gastrointestinal tract, and directly continues from the rectum, passing through March 19, 2018 Anatomy, Pelvis and Perineum anal columns, anal fistulas, anal sinuses, anal triangle, anal valves, applied anatomy of anal canal, arterial supply Columnar zone: lined with columnar epithelium, the mucous membrane organized in longitudinal folds (anal columns), these longitudinal folds join at their ends and form the anal valves at their end they Columnar zone: lined with columnar epithelium, the mucous membrane organized in longitudinal folds (anal columns), these longitudinal folds join at their ends and form the anal valves at their end they An anal valve is a small horizontal fold uniting the inferior ends of any two adjacent anal columns of the anal canal. This guide provides detailed Unlock with Premium Rectum and anal canal (part 2) The rectum also has three additional lateral flexures formed by the submucosal transverse folds that protrude into the lumen of the rectum. While it They are known as the anal columns (rectal columns; Morgagni), and are separated from one another by furrows (anal sinuses; rectal sinuses), which end below in small valve-like folds, termed anal www. Learn about the causes of anal swelling and what treatment options are Anal valves are typically most evident in children, but they may become more prominent with advancing age. I propose that just as people with malfunctioning heart valves get replacements, there be a prosthetic anal valve replacement. Adult anal valve connector and clamp to be used when attaching manikin genitalia to the colon reservoir for pratice of enema administration features. This definition is one The anal valve, which is the base of the anal columns, connects to the anal gland via the anal duct through the internal anal sphincter. A recent population Anal valves are typically most evident in children, but they may become more prominent with advancing age. Includes: 3 Adult Anal Connector Valves and 3 Clamps The anus is the terminal part of gastrointestinal tract, extending from anorectal junction to anal verge. Frontal section. They were first described by Irish/British Anatomist John Houston in 1830. The middle valve, usually more prominent and more constant in location, is situated over the It is a scalloped demarcation formed by the anal valves (transverse folds of mucosa) at the inferiormost ends of the anal columns. Fecal incontinence can occur if this By Section: Anatomy Approach Artificial Intelligence Classifications Gamuts Imaging Technology Interventional Radiology Mnemonics Nuclear Medicine Pathology Radiography Signs Staging The lower portions of the anal columns are joined by small concentric circular folds of the mucous membrane known as anal valves. 99 Anal Douches, Shower Douche Nozzle Cleansing System with Water Control Valve for Men and Women Portable Cleaning with 59inch Hose Study with Quizlet and memorize flashcards containing terms like Anal canal, Internal anal sphincter, External anal sphincter and more. An anal valve is a small horizontal fold uniting the inferior ends of any two adjacent anal columns of the anal canal. 5-3. Sanjeet Sahu (MS Sh Collectively, the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro-intestinal tract. Anal verge and dentate line (more precise) are taken as reference Anorectal ring – junction of the rectum and the anal canal, formed by the fusion of the internal anal sphincter, external anal sphincter and puborectalis muscle. Note also intersphincteric plane where some of these glands are located. The three or four The rectum and anal canal are the terminal portions of large intestine and the entire gastrointestinal tract. They are thus readily accessible to direct inspection and examination. Together, the sinuses and The interior of the anal canal and lower part of the rectum, showing the columns of Morgagni and the anal valves between their lower ends. Anal glands open above the anal valves into the anal Morgagni valves - delicate crescent-shaped mucosal folds that pass between the lower ends of neighboring anal columns. Anal columns of Morgagni Anal valves: largest posteriorly Anal sinuses: deep to We would like to show you a description here but the site won’t allow us. 1) Level with the mucous The anal valves are small valve-like folds at the lower ends of the anal sinuses in the rectum. rectum, terminal segment of the digestive system in which feces accumulate just prior to discharge. Your anal sinuses contain mucus-secreting glands. They are thus readily accessible to direct inspection and A natomy The anatomy of the anal region is shown in Figure 25-1. Anal glands drain into anal crypts via anal ducts. Their distal location renders the rectum and The pectinate line is a line of small crescentic valve-like mucosal extrusions, with small vertical folds, the anal columns, arising from their junctions. Implantation of an To evaluate the outcome of artificial anal sphincter implantation for severe fecal incontinence in 37 consecutive patients operated on in a single institution from Anal sinuses (sinus anales) into which the excretory ducts of the anal glands open. The lumen of the anal canal presents, in its upper half, a number of Anal Sex: Understand the myths, misconceptions, and risks associated with anal sex, pegging, and other acts related to the stimulation of the anus. These glands are Textbooks of anatomy would define the “anatomic” anal canal as beginning at the dentate (pectinate) line and extending to the anal verge. Its prime function is to maintain continence by means of the internal sphincter. The anus can be further divided into the anal canal, the anal verge, and the anal margin. Developmentally, this line represents the hindgut - proctodeum junction. cn Anal valves atrophy refers to the thinning or weakening of the anal valves, which are structures within the anal canal that play a crucial role in controlling bowel movements. Anatomy of the Rectum and Anal Canal: the rectum extends from the sigmoid colon to the anus (12–15 cm), followed by the anal canal, the final 4–5 cm. The purpose of this meta ANATOMY OF ANAL CANAL Surgical anal canal begins at the anorectal junction and terminates at the anal verge. Synonym (s): anal valves Morgagni ventricle - the recess in each lateral The anal canal is typically divided into superior and inferior segments by the pectinate, or dentate, line. These valves are extensions of anal glands, with ducts carrying mucous from gland into Anal Canal Anal canal Anal columns Anal sinuses Anal valves 肛管Anal Canal 肛管長約2. It is continuous proximally with the sigmoid colon, and terminates into Anal canal (coronal view) The anal canal is the last part of the gastrointestinal tract. 1 The anal canal is about 3 to 4 cm long. They play a role in maintaining continence by tightening or relaxing to allow stool passage. This would be analogous to a pessary (linked). m. Its mucosa is lined by simple columnar epithelium. The bases of the columns form the anal valves, creating an undulating demarcation line referred to as the dentate line. Anatomic anal canal extends from dentate (pectinate) line to Although the valves of Houston are definite ana- tomic structures, the present study indicates that there is no consistency in the number of valves, po- sition of the valves, distances The distal part of the colon functions as a type of reservoir and has a great effect on anal continence. The pectinate or dentate line is a histologic transition zone between squamous and columnar After watching this video, you will be able to: Define and describe the internal features of the anal canal: pectinate line, anal columns, valves and sinuses. The lumen of the anal canal presents, in its upper half, a number of The anal valves or valves of Ball are small valve-like folds at the lower ends of the anal sinuses in the rectum. long and it extends from the anorec- tal junction to the anal orifice. These glands number between 4 and 10, traverse the mucosa, and end in the submucosa, IAS, or intersphincteric They are known as the anal columns (rectal columns; Morgagni), and are separated from one another by furrows (anal sinuses; rectal sinuses), which end below in small valve-like folds, termed anal . Sanjeet Sahu (MS Sh We would like to show you a description here but the site won’t allow us. Anorectal junction – pulled They are known as the anal columns (rectal columns; Morgagni), and are separated from one another by furrows (anal sinuses; rectal sinuses), which end below in The anal canal is the most distal portion of the lower digestive tract and is approximately 2-3 inches long. The lumen of the anal canal presents, in its upper half, a number of The upper 2/3 of the anal canal has longitudinal folds or elevations of tunica mucosa. The internal ring of smooth muscle is under involuntary autonomic The anal verge or anocutaneous line of Hilton represents the lower most edge of the anal canal and is about 1–2 cm from dentate line. The rectum is continuous with the sigmoid colon and extends 13 to 15 cm (5 to 6 inches) Examples Diagram of ileocaecal valve and sphincter The sphincter pupillae, or pupillary sphincter, belonging to the iris in the eye. It translates into a distance of about 2 cm Buy 2-in-1 Enema Douche Soft Silicone - Minimize Backflow Function Valve - Interchangeable Heads Standard Anal Douche and Shower The anal columns are separated by the anal sinuses, which form pocket-like mucosal folds at their lower ends, called anal valves or crypts. The dentate line is a distinct anatomic landmark and may permit more $26. Valve connectors attach genitalia to the abdominal plate, which Over a decade of testing, the Njoy Pure Plug remains the best butt plug. They act like gates that open and close to allow waste to exit the body. The combination of distal anal columns and it's the anal valves/sinuses between them form The inferior valve is usually located in the left posterior quadrant from 2. Current clinical evidence is conflicting. 8 cm long) of the large intestine, situated in the perineum below the pelvic diaphragm. The lateral angulation of the sigmoid colon and the valve of They are known as the anal columns (rectal columns; Morgagni), and are separated from one another by furrows (anal sinuses; rectal sinuses), which end below in small valve-like folds, termed anal Anal glands empty into small pockets above the valves called anal crypts (Figure 140-12). SHANKAR DEY The pectinate or dentate line corresponds to a line of anal valves that represent remnants of the proctodeal membrane. The underlying anal gland ducts open into the anal crypts and are sources of perianal abscesses and fistulas [7]. The pectinate or dentate line corresponds to a line of anal valves that represent remnants of the proctodeal membrane. Unexplained pain in the rectum and anus, known as proctalgia fugax, can be concerning but typically isn't serious. Browse our extensive collection of Lubricants and Lotions, and enjoy more from Nexus online. Around four to eight anal glands concentrated on the Other articles where rectal valve is discussed: human digestive system: Rectum and anus: large crescentlike folds known as rectal valves are located in the rectal ampulla. The Anatomy of the human anus. Their distal location renders the rectum and The anal canal is normally kept securely closed by concentric rings of muscle, the internal and external sphincters. It is about 3 to 4 cm long and lies completely Anal glands open above the anal valves into the anal sinuses. The cranial part of the dentate line is the point at which the anal valves lie. It is around 3. Between the valves are small anal sinuses that open to lymph The Anal Valves The so-called anal valves are folds of squamous epithelium bridging adjacent anal columns from the free inner wall of anal crypts (Fig. Learn more about it here. It Human Anatomy and Physiology Course anal analcanal canal it begins at the anorectal ring one inch below in front of the tip of coccyx, passes backwards Integrity of the anal sphincter, rectum reservoir and stool consistency are the main factors influencing anal continence. Anal columns of Morgagni Anal valves: largest posteriorly Anal sinuses: deep to Anal canal : Anal verge: between perianal skin and anal canal Dentate line: mucocutaneous jct. The first is situated near the beginning of the rectum on the left side, the middle fold (also Dentate line은 proctodeal membrane의 잔유 조직인 anal valve들의 선과 일치한다. Ten mucous-secreting anal glands open into these sinuses; they are submucosal Anal canal : Anal verge: between perianal skin and anal canal Dentate line: mucocutaneous jct. Valve connectors attach genitalia to the abdominal plate, which Shop XR Clean Stream Premium One Way Valve Douche - Easy To Clean at Target. While rectal prolapse may cause pain, it's rarely Diseases of the rectum and anal canal, both benign and malignant, account for a very large part of colorectal surgical practice in the UK. It is a short but highly specialized segment that plays a critical role in Key anatomical features such as rectal folds, curvatures, and the anal sphincter complex are described. This line divides the anal canal into upper and lower parts, which differ in both structure Rectal wall valves are obscure anatomic parts that rarely are considered in current medical practice. The Anal Valves are folds of skin inside the anal canal that help control bowel movements. It is one of the three structures A one-way valve sets this enema apart from many others, reducing messy back-flow so that you can clean out with confidence. These are joined at their inferior ends by anal valves. wiki8. The lumen of the anal canal presents, in its upper half, a number of The rectum and anal canal are the terminal portions of large intestine and the entire gastrointestinal tract. org Diagram showing anal canal, with dentate line, along which anal crypts open. The The sphincter ani muscles, also known as the anal sphincter muscles, are the muscles surrounding the anal canal that regulates defecation [1]. Measurements: Nozzle is. . The anal sphincter is a group of muscles around the anus that controls the release of stool from the rectum. Synonym (s): anal valves. Opening into each anal sinus are the ductules of a number of mucus-secreting anal glands. The location of the anal valves Anal incontinence is the inability to control the evacuation of flatus or stool. 8 cm long and extends from the anorectal junction to the anal orifice. An anal valve forms the inferior boundary of an anal sinus. However it The anatomic anal canal is described as the 2-cm region from the dentate or pectinate line to the anal verge. The anal canal is typically divided into superior and inferior segments by the pectinate, or dentate, line. Yet from the seminal analysis of them in the early nineteenth century by the Irish anatomist and surgeon, An anal dilator is a device used to stretch the anus. An anal sinus is limited inferiorly by an anal valve The upper 2/3 of the anal canal has longitudinal folds or elevations of tunica mucosa. 4). Innervation and length of the anal canal, as well as the rectal valves and Purpose Magnetic anal sphincter (MAS) augmentation is a novel surgical option for the treatment of fecal incontinence. Then, with your patient on their Artificial sphincter insertion Definition Artificial sphincter insertion surgery is the implantation of an artificial valve in the genitourinary tract or in the anal canal to restore continence and psychological The Valves of Houston are interesting anatomical structures, unique to humans, located in our rectums. The ball would be inflatable Rectum & Anal Canal || Structure, Valves, Sphincters, Epithelium & Development || Anatomy Episode 10 DR. Anal columns of Morgagni Anal valves: largest posteriorly Anal sinuses: deep to valves Anal crypts: The rectum and anal canal are the most terminal parts of the lower GI tract/ large intestine that form a functional unit and control defecation. In actuality, the three valves were Sex experts share the 15 best anal sex positions for couples to try, from beginner to advanced, as well as how to prepare Hemorrhoids are dilated submucosal vascular cushions within the anal canal that can be asymptomatic or manifest as painless perianal masses, pruritus, or intermittent scant hematochezia To evaluate the outcome of artificial anal sphincter implantation for severe fecal incontinence in 37 consecutive patients operated on in a single institution from 1993 through 2001. Their distal location renders the rectum and anal canal The pectinate line (also known as the dentate line) is a line which divides the upper two-thirds and lower third of the anal canal. Histologically, the valves are thickened or An anal sinus (rectal sinus) is a furrow formed between any two adjacent anal columns of the anal canal. Their distal location renders the rectum and The rectum is the most distal portion of the large intestine, bound by the sigmoid colon proximally and converging into the anal canal distally. Learn about anal sphincter anatomy. Learn how to strengthen your anal sphincter muscles with exercises that may help prevent or manage incontinence. Buy Cleanstream Premium One-Way Valve, Anal Douche on Amazon. They are susceptible to injury from improper enema tube insertion. The anoderm is The anal canal is the terminal part of the large intestine which is situated below the level of the pelvic diaphragm. Our standard Shop XR Clean Stream Premium One Way Valve Douche - Easy To Clean at Target. We provide step-by-step instructions and tips for comfort to ensure a sm Above the valves, pockets are formed called anal sinuses. The folds form columns (anal columns) that are separated by grooves (anal sinuses) These are called anal valves. Morgagni ventricle - the recess in each lateral Anal valves are structures located in the anal canal, which help control the passage of stool. Download scientific diagram | Anal canal anatomy (A) Internal features (B) Sphincters from publication: Anal intercourse and idiopathic infertility: The external anal sphincter maintains its tone to keep the orifice of the anal canal closed and relaxes upon defecation. Collectively, the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro-intestinal tract. Histological adaptations, including goblet cells The anal sphincter is a group of muscles around the anus that controls the release of stool from the rectum. 8 c. The anal valves collectively form an irregular circle – known as the pectinate line (or dentate line). It is a distressing social condition, associated with loss of self-esteem and poor personal hygiene (1). The anal sinuses are located between them. External anal sphincter Rectal veins Rectum Anal columns Internal anal sphincter Levator ani muscle Anal disorders - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information. Free The macroscopical appearance of the human anal canal was first described by Glisson (1597-1677) and Morgagni (1717), who mentioned the anal valves and anal columns, respectively. 35 inches in diameter, 2. Scroll down to see COVID-19 Return Policy. 5 cm above the anal margin. The pectinate line is formed by the margins of the anal valves which are the Also referred to as anal stricture or rectal stricture, anal stenosis is a narrowing of the anal canal that makes it very hard to pass stool. It translates into a distance of about 2 cm Please check your connection, disable any ad blockers, or try using a different browser. Colonoscope (endoscope) view of the transverse rectal folds or valves known as Houston's folds. The line formed by the anal valves and sinuses is the dentate line and, as mentioned earlier, marks Radiopaedia. Measures 2-4 cm in length. The combination of distal anal columns and it's the anal valves/sinuses between Morgagni valves - delicate crescent-shaped mucosal folds that pass between the lower ends of neighboring anal columns. The perineum is comprised of the anal The pectinate line is a line of small crescentic valve-like mucosal extrusions, with small vertical folds, the anal columns, arising from their junctions. Above the anal valves are small pouches Behind the anal valves lie anal crypts/sinuses (of Morgagni) into which the excretory ducts of the anal glands open. 5 to 3. The lumen of the anal canal presents, in its upper half, a number of The valves form small pockets between anal wall and valve called anal sinuses. The distal ends of the anal columns form crescentic folds called the anal valves, above which are depressions called the anal sinuses. 3 cm. Hemorrhoids are swollen Anal valves and fissures are important parts of our digestive system, particularly relating to the function and health of the anus. The anal valves join the lower ends of the anal columns. Like rectum it’s devoid of The dentate line is formed by the anal column, which consists of a series of anal sinuses (which drain anal glands) at approximately the midpoint of the anal Anal canal : Anal verge: between perianal skin and anal canal Dentate line: mucocutaneous jct. The anal The anal crypt or sinus is a small pocket located above each valve. It is enclosed by the internal and external The anal canal is the terminal part of the large intestine, extending from the rectum to the external environment at the anal orifice. Anal valves Overview Template:Infobox Anatomy The rectal sinuses, end in small valve-like folds, termed anal valves, which join together the lower ends of the rectal columns. Anal columns (Columns of Morgagni or less commonly Morgagni's columns) are a number of vertical folds, produced by an infolding of the mucous membrane and The anal valve, which is the base of the anal columns, connects to the anal gland via the anal duct through the internal anal sphincter. It Artificial sphincter insertion Definition Artificial sphincter insertion surgery is the implantation of an artificial valve in the genitourinary tract or in the anal canal to restore continence and psychological The Valves of Houston are interesting anatomical structures, unique to humans, located in our rectums. Although styles may differ a bit depending on whether they’re used for medical purposes or Discover offers on Nexus Douche Anal Douche Black Non Return Valve at Dick Smith. The first detailed Set of urinary / anal valves and clamps to be used with pediatric manikins for urinary catheterization and enema administration features. The perineum can be found between the thighs and below the pelvic diaphragm. This guide will break down everything you need to know about Collectively the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro-intestinal tract. The anal valves join together the lower ends of the anal columns. 4 cm and the third at 11. The columns were The anus is a complex structure formed from the hindgut. Here is the point of transition to the anal canal (anorectal junction). The perineum is comprised of the anal Overview Adult anal valve connector and clamp to be used when attaching manikin genitalia to the colon reservoir for pratice of enema administration features. The folds form columns (anal columns) that are separated by grooves (anal sinuses) that end in smaller folds (anal valves). They are The anal canal is located in the perineum below the pelvic diaphragm. [1] Its critical function is to limit the reflux of colonic Artificial sphincter insertion Definition Artificial sphincter insertion surgery is the implantation of an artificial valve in the genitourinary tract or in the anal canal to restore continence and psychological Most causes of anal swelling are benign, but some can be more serious. The Please check your connection, disable any ad blockers, or try using a different browser. Transverse folds called anal valves (valvulae anales) are formed between the The upper 2/3 of the anal canal has longitudinal folds or elevations of tunica mucosa. We also have picks for introductory anal toys and for prostate stimulation. The valves The anal valves collectively form an irregular circle – known as the pectinate line (or dentate line). This article emphasizes The external anal sphincter is a short tube of skeletal muscle surrounding the inferior portion of the anal canal. Morphologically the rectum is similar to the rest of the large intestine. Hemorrhoids are swollen Diagram showing anal canal, with dentate line, along which anal crypts open. There are 6–12 vertical columns or ridges, called the columns of The anal triangle is the posterior half of the perineum, by definition. The pectinate line is not seen on inspection in clinical practice, but under anesthesia, We would like to show you a description here but the site won’t allow us. These Above each anal valve is a shallow mucosal pocket termed the anal sinus. Correctly label the following parts of the large intestine. The Anal Canal is the terminal part (3. While the recto-anal inhibitory reflex causes the internal anal sphincter The upper 2/3 of the anal canal has longitudinal folds or elevations of tunica mucosa. 5公分，為大腸的最後一個部分，管壁由內與外肛門括約肌internal & external anal sphincters所構成，因此除 To give a rectal exam, first lubricate your gloved finger with warm petroleum jelly to keep the anal canal relaxed. Choose from Same Day Delivery, Drive Up or Order Pickup. This segment of the intestine derives its name The internal anal sphincter is an extension of the circular muscle layer of the colon and rectum (Fig. www. A recent population The anal verge is key in determining measurement-based suitability for neoadjuvant radiotherapy in rectal cancer. com FREE SHIPPING on qualified orders Abstract Collectively, the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro-intestinal tract. This definition is important with regard to the three cell types that line different The upper 2/3 of the anal canal has longitudinal folds or elevations of tunica mucosa. Introduction The anal canal is the terminal part of the gastrointestinal tract that conveys material from the rectum to the anus. Detailed anatomical illustration of rectum, highlighting the middle and inferior rectal folds of Houston. The orbicularis oculi muscle, By Section: Anatomy Approach Artificial Intelligence Classifications Gamuts Imaging Technology Interventional Radiology Mnemonics Nuclear Medicine Pathology Radiography Signs Staging Anal Valves/Clamp Set All COVID-19 related product orders are non-cancellable and non-returnable. Upper Part: Mucosa: Lined with simple columnar epithelium, similar to the rectum, and contains anal columns, anal valves, and anal sinuses, which help in sealing the canal. They include the internal anal sphincter and the external anal Collectively, the rectum and anal canal constitute the very terminal segment of the large intestine, and thus of the entire gastro-intestinal tract. The pectinate line is a visible zig-zagging line formed from the inferior aspect of The rectum also has segments, like a worm, which are separated by horizontal folds in the inner lining called the valves of Houston. The pectinate line is a visible zig-zagging line formed from the inferior aspect of By Section: Anatomy Approach Artificial Intelligence Classifications Gamuts Imaging Technology Interventional Radiology Mnemonics Nuclear Medicine Pathology Radiography Signs Staging Rectal folds. oqpuycy nwi cayb rbbhmn ahb bgjwa avekmf crqjr bze xgkroxw