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Anal sinuses information


Anal sinuses
Coronal section of rectum and anal canal
The interior of the anal canal and lower part of the rectum, showing the anal columns and the anal valves between their lower ends (the columns were more numerous in the specimen than usual)
Details
Identifiers
Latinsinus anales
TA98A05.7.05.006
TA23013
FMA76584
Anatomical terminology
[edit on Wikidata]

An anal sinus (rectal sinus) is a furrow formed between any two adjacent anal columns of the anal canal. An anal sinus is limited inferiorly by an anal valve (which unites the inferior ends of a pair of adjacent anal columns). The anal glands open into the anal sinuses.[1]

  1. ^ Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 315. ISBN 978-0-7295-3752-0.

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Anal sinuses

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unites the inferior ends of a pair of adjacent anal columns). The anal glands open into the anal sinuses. Sinnatamby, Chummy S. (2011). Last's Anatomy...

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Anal canal

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the anal canal and lower part of the rectum Median sagittal section of male pelvis Median sagittal section of female pelvis Anal columns Anal sinuses Anal...

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Human anus

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conditions, including cancer (see anal cancer). With anal sex, the anus can play a role in sexuality. Attitudes toward anal sex vary, and it is illegal in...

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Sinus

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base under the pituitary gland Anal sinuses, the furrows which separate the columns in the rectum Dural venous sinuses, venous channels found between...

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Rectum

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is followed by the anal canal, which is about 4 centimetres (1.6 in) long, before the gastrointestinal tract terminates at the anal verge. The word rectum...

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External anal sphincter

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anal sphincter is far more substantial than the internal anal sphincter. The proximal portion of external anal sphincter overlaps the internal anal sphincter...

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Internal anal sphincter

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The internal anal sphincter, IAS, or sphincter ani internus is a ring of smooth muscle that surrounds about 2.5–4.0 cm of the anal canal. It is about...

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Pyriform sinus

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The pyriform sinus (also piriform recess, piriform sinus, piriform fossa, or smuggler's fossa) is a small recess on either side of the laryngeal inlet...

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Anal valves

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the anal canal. An anal valve forms the inferior boundary of an anal sinus. The anal valves demarcate the level of the pectinate line. Sinnatamby, Chummy...

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Pectinate line

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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...

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Mucous membrane

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mucosa Penile mucosa Respiratory mucosa Vaginal mucosa Frenulum of tongue Anal canal Conjunctiva Developmentally, the majority of mucous membranes are of...

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Gastrointestinal tract

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(osculum) for excretion, comb jellies have both a ventral mouth and dorsal anal pores, while cnidarians and acoels have a single pore for both digestion...

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Cecum

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ileocecal valve to the anus; it comprises the cecum, colon, rectum, and anal canal "The Large Intestine". VideoHelp.com. "What Are the Functions of the...

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Human digestive system

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the small and large intestine. The large intestine includes the rectum and anal canal. Partially digested food starts to arrive in the small intestine as...

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Large intestine

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as the combination of the cecum, colon, rectum, and anal canal. Some other sources exclude the anal canal. In humans, the large intestine begins in the...

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Jejunum

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Ileum

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Duodenum

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Pharynx

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hyoid bone. The laryngopharynx includes three major sites: the pyriform sinus, postcricoid area, and the posterior pharyngeal wall. Like the oropharynx...

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Sigmoid colon

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Intestinal villus

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Ileocecal valve

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Pylorus

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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Goblet cell

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Colic flexures

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Small intestine

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Esophagus

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folds Ampulla Anal canal Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter...

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