The pectinate line
Webb22 sep. 2024 · All of the following statements concerning the pectinate line are correct EXCEPT (A) It is the junction between the superior and inferior parts of the anal canal. (B) The superior rectal artery supplies the superior part of the anal canal. (C) Lymphatic vessels from the superior part of the anal canal drain into the internal lymph nodes. Webb4 juni 2012 · The dentate (pectinate) line divides the anal canal into upper (two-thirds) and lower (one-third) parts, each one being supplied by completely different neurovascular …
The pectinate line
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WebbBelow it, lymphatic drainage is to the superficial inguinal nodes. [2] Hilton's white line is slightly below the pectinate line, a landmark for the intermuscular border between internal and external anal sphincter muscles.. This line represents the transition point from non-keratinized stratified squamous epithelium of the anal canal to keratinized stratified … Webb29 juni 2016 · The pectinate line is the site of transition of the proctodeum below and the postallantoic gut above. It is a scalloped demarcation formed by the anal valves …
WebbIf the venous drainage of the anal canal above the pectinate line is impaired in a patient with portal hypertension, there may be an increase in blood flow downward to the systemic venous system via anastomoses with the inferior rectal vein, which is a tributary of the: External iliac Inferior gluteal Inferior mesenteric Internal iliac WebbThe horizontal line along which the anal valves lie is called the pectinate (“comb-shaped”) line. Because the mucosa superior to this line is innervated by visceral sensory fibers, it is relatively insensitive to pain. Inferior to the pectinate line, however, the mucosa is sensitive to pain because it is innervated by somatic nerves.
WebbThe whitish line called the pectinate line (Hilton's) indicates the junction between keratinized stratified squamous epithelium and unkeratinized stratified squamous epithelium. This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – … The pectinate line (dentate line) is a line which divides the upper two-thirds and lower third of the anal canal. Developmentally, this line represents the hindgut-proctodeum junction. It is an important anatomical landmark in humans, and several distinctions can be made based upon the location of a structure … Visa mer • Microscopic cross section of the anorectal junction. • Anatomy of the anus and rectum • Coronal section of rectum and anal canal. Visa mer • pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (rectum) Visa mer
WebbThe pectinate line is an important anatomic landmark, as it is where the blood supply, lymphatics, and nerves differ based on being above or below the pectinate line. Can you …
Webb16 dec. 2024 · Internal hemorrhoids occur above the pectinate line (superior rectal vein) and are not painful (visceral innervation). External hemorrhoids occur below the pectinate line and are painful because the pudendal nerve provides this area with somatic innervation. The pudendal nerve (S2 – S4) innervates the external anal sphincter. how many classes is full time at snhuWebbStruggling to enjoy 23. Feels so similar to 22. : r/MLBTheShow. Struggling to enjoy 23. Feels so similar to 22. This is it really, played the 1st week, did the WBC program and the Negro Leagues moments, Done the conquest maps. Now I’m already kinda burned out with this game. Mechanics and graphics are pretty much indistinguishable from last ... how many classes of fire extinguishers existWebbLymphatic drainage. Above pectinate line into internal iliac LNs. Below the pectinate line into superficial inguinal LNs. – A free PowerPoint PPT presentation (displayed as an HTML5 slide show) on PowerShow.com - id: 809c34-M2YxM high school musical the series rating ageWebb6 feb. 2024 · The bottom line is that it is the arrangement of the atrial appendages that indicates the presence of cardiac isomerism, as opposed to problems with either ventricular looping or specific ventriculo-arterial connections. ... The left-hand panel shows the pectinate muscles extending bilaterally to meet at the cardiac crux, ... how many classes of firesWebb31 maj 2016 · The intermediate or pectinate zone is lined by stratified squamous epithelium but without adnexae (e.g., hair, sebaceous glands) and also is referred to as anoderm. Its proximal margin, in contact with the proximal zone, is called the dentate line; its distal margin, in contact with the anal skin, constitutes the pectinate line, also … how many classes of fish are thereWebb2 aug. 2024 · The inferior rectal nerve, also known as the inferior anal nerve or inferior hemorrhoidal nerve, is a branch of the pudendal nerve which is derived from S2, S3 and S4 nerve roots of the sacral plexus.The nerve provides sensory innervation to the anal canal inferior to the pectinate line and motor innervation to the external anal sphincter. high school musical the series streamingWebbThe opening of the pit is lined with epithelial cells that secret a thick basic mucous that aids in the protection of the gastric mucosa (lining) found throughout the stomach. If we … how many classes of food