The interior of the anal cami 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
Latin
valvulae anales
TA98
A05.7.05.005
TA2
3014
FMA
74028
Anatomical terminology
[edit on Wikidata]
An anal valve is a small horizontal fold uniting the inferior ends of any two adjacent anal columns of the anal canal. An anal valve forms the inferior boundary of an anal sinus. The anal valves demarcate the level of the pectinate line.[1]
^Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 315. ISBN 978-0-7295-3752-0.
anal canal. An anal valve forms the inferior boundary of an anal sinus. The analvalves demarcate the level of the pectinate line. Sinnatamby, Chummy...
mucosa which are joined inferiorly by folds of mucous membrane known as analvalves supplied by the superior rectal artery (a branch of the inferior mesenteric...
external anal sphincters, two muscular rings which control defecation.: 397 The anus is surrounded in its length by folds called analvalves, which converge...
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...
The anal glands are situated within the wall of the anal canal and communicate with the lumen of the canal via ducts that open at the analvalves, just...
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...
anal sphincter is far more substantial than the internal anal sphincter. The proximal portion of external anal sphincter overlaps the internal anal sphincter...
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. Sinnatamby...
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...
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...
(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...
consists of a legless pre-anal body segment (which may contain a posterior extension known as an epiproct), a pair of analvalves (paraprocts) or plates...
digestive tube extending from the ileocecal valve to the anus; it comprises the cecum, colon, rectum, and anal canal "The Large Intestine". VideoHelp.com...
Houston's valves or the valves of Houston) are semi-lunar transverse folds of the rectal wall that protrude into the rectum, not the anal canal as that...
The circular folds (also known as valves of Kerckring, valves of Kerchkring, plicae circulares, plicae circulae, and valvulae conniventes) are large valvular...
lampreys, the spiral valve is extremely small, possibly because their diet requires little digestion. Hagfish have no spiral valve at all, with digestion...
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...
column-shaped, and squamous if flat. In the oesophagus, pharynx and external anal canal the epithelium is stratified, squamous and non-keratinising, for protective...
younger than 30 days, and up to 8 mm in adults. The pyloric sphincter, or valve, is a strong ring of smooth muscle at the end of the pyloric canal which...
that grinds food and transports it directly to the intestines. A one-way valve connects the pharynx to the excretory canal. Everted pharynx of Alitta virens...
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