The pectinate line
Webb15 dec. 2024 · Pectinate line: internal rectal venous plexus Inferior to pectinate line: inferior rectal vein. Nerve supply ... WebbThe pectinate line is called the watershed line because it separates the two entirely different parts of the anal canal (in terms of development, nerve supply, blood supply and lymphatic drainage). How far in is dentate line? The median distance between the dentate line and the anal verge was 2.0 cm.
The pectinate line
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WebbThis Osmosis High-Yield Note provides an overview of Germ Layers essentials. All Osmosis Notes are clearly laid-out and contain striking images, tables, and diagrams to help visual learners understand complex topics quickly and efficiently. Find more information about Germ Layers: Ectoderm. Mesoderm. Endoderm. 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 …
WebbDentate line Circular separation line formed by the fusion of anal valves ( hindgut - proctodeum junction) Divides anal canal into an upper and lower part (also see characteristics of the anal canal above and below the dentate line below) External anal sphincter Subcutaneous external sphincter: surrounds lower third of anal canal Superficial Webb30 mars 2024 · Chronic anal fissure presents as longitudinal, deep ulcer, sometimes coated with smear. Secondary changes can occur in their development, such as hypertrophied anal papillae close to the proximal edge of the fissure at the level of the pectinate line, also pathologically altered crypts (anal cryptitis) or sentinel tags …
Webbpectinate (dentate) line is the junction between endoderm and ectoderm and is located at the inferior limit of the anal valves. pectinate line divides the visceral and somatic … WebbAn imaginary line that extends from the ala of the nose to the tragus of the ear. The line is an estimated point of entry for intraoral dental radiographs of the maxilla and is also used in denture prosthodontics. arcuate line 1. The lower edge of the iliac fossa of the ilium.
Webb6 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, ...
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. greenfields family centre huddersfieldWebb30 okt. 2024 · While explaining the colon, rectum, and anal canal anatomy, the pectinate line should be mentioned separately. The pectinate line is formed by the margins of the anal valves which are the small mucosal pockets between the five or ten folds of the mucosa that are known as the anal columns of Morgagni. It is the most critical mark in … greenfields farm shop menuWebbThe 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 – … fluoxetine drug informationWebbIf 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 fluoxetine for dogs onlineWebbLower rectum to anal canal (above pectinate line) - recall how the pectinate line is an important border (eg for portal vs systemic venous drainage, for visceral vs somatic innervation) Superficial inguinal . Anal canal (below pectinate line) - … greenfields farm butcheryWebb2 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. greenfields farm resort bulacanWebbUpper region (frequently named pecten): It’s 15 millimeters long and stretches from the pectinate line to Hilton’s line. It’s lined by the non-keratinized stratified squamous epithelium. The mucous lining in this region appears bluish in colour because of underlying dense venous plexus and is adherent to the underlying structures. greenfields farm shop priorslee telford