QuestionSBA
QuestionChoice
These are tall, circular folds of mucosa found in the jejuneum. In the ileum they are smaller. Confusingly, these folds are also known as valves of Kerckring or plicae circularis. These help to increase the surface area for reabsorption.
10009375
a
Valvulae conniventes
QuestionChoice
This is found characteristically in the duodenum, in the submucosa. They produce mucosa to protect the duodenum from damage due to gastric acid.
10009378
d
Brunner's glands
QuestionChoice
These are intestinal glands that extend into the lamina propria, with Paneth cells located at the base of the crypts (although their function is unclear - perhaps antimicrobial).
10009377
c
Crypts of Lieberkuhn
QuestionChoice
The jejuneal and ileal arteries anastomose to form loops called arcades which terminate as the vasa recta (straight arteries). In the jejuneum there are fewer arcades but longer vasa recta as compared to the ileum.
10009379
e
Vasa recta
QuestionChoice
This is gut associated lymphoid tissue found characteristically in the ileum in the lamina propria of the mucosa. Here we are looking at the jejuneum. These would also be difficult to see macroscopically.
10009376
b
Peyer's patches
Concept
Chapter
2693
5339
Jejuneum and Ileum
Topic
197
Abdominal anatomy
14423
Picture
1782
124 - Jejunum and Ileum (valvulae conniventes).png
images/oge8yi6s1682953250942.jpg
images/oge8yi6s1682953250942_256.jpg
images/oge8yi6s1682953250942_512.jpg
awgODYK5mYiHiHh/dnZ4cnuTsGkJ
Topic
197
Abdominal anatomy
Identify the structure labelled by the arrow in the image below.

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a