Jejunum and ileum (Dave's notes) Flashcards Preview

Anatomy: Abdomen (Dave's notes) > Jejunum and ileum (Dave's notes) > Flashcards

Flashcards in Jejunum and ileum (Dave's notes) Deck (9)
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1
Q

Describe the Jejunum relative to the ileum

A

Wider bore, thicker walls, “double” walled, lies in the upper part, contributes approximately 2/5ths of length

2
Q

Describe the Ileum relative to the jejunum

A

Narrower bore, thinner walls, lower reachers have an antimesenteric border of elongated whitish plaques which are aggregaed lymphoid follicles (= peyer’s patches), lies in the lower part and down into the pelvis, comprises approximately 3/5th of length,

3
Q

What is the blood supply of the jejunum?

A

From the SMA, single arcades which give off straight arteries. These arteries are long and narrowly spaced for the jejunum

4
Q

What is the blood supply of the ileum?

A

From the SMA, with 3-5 arcades and shorter more widely spaced straight arteries than the jejunum

5
Q

How does the mesentary differ between these two sections of small bowel?

A

There is more fat in the mesentary of the ileum than the jejunum

6
Q

What is the lymphatic drainage of the ileum and jejunum?

A

Via the SM nodes

7
Q

What is the nerve supply of the jejunum and ileum?

A

Parasympathetic and sympathetic

8
Q

What is the course and role of the parasympathetic supply to the ileum and jejunum?

A

The parasympathetic supply travels via vessels and normally augments peristaltic activity

9
Q

What is the course and role of the sympathetic supply to the ileum and jejunum?

A

The sympathetic supply is a vasoconstrictor and inhibits peristalsis peristalsis, and transmits pain which is usually felt in the umbilical region. Course??