Small intestine

Question 1

Where do the small intestines begin?

Answer 1

After the pyloric sphincter

Question 2

Where do the small intestines end?

Answer 2

Ileo-caecal junction

Question 3

What are the parts of the small intestines?

Answer 3

Duodenum

Jejunum

Ileum

Question 4

How does the duodenum relate to the peritoneum?

Answer 4

It is mostly retroperitoneal

Question 5

What are the parts of the duodenum?

Answer 5

Superior

Descending

Inferior

Ascending

Question 6

What structures are anterior to the superior part of the duodenum?

Answer 6

Liver

Gall bladder

Question 7

What is attached to the superior part of the duodenum?

Answer 7

Hepatoduodenal ligament of lesser omentum

Question 8

What structures is the descending part of the duodenum anterior to?

Answer 8

Anterior to the right kidney

Question 9

What structures is the descending part of the duodenum posterior to?

Answer 9

Transverse colon

Question 10

What structures is the descending part of the duodenum on the left to?

Answer 10

Head of pancreas

IVC

Question 11

What feeds into the descending part of the duodenum?

Answer 11

Ampulla of vater

Question 12

Where on the descending part of the duodenum does the ampulla of vater feed into it?

Answer 12

Major duodenal papilla

Question 13

What structures is the ascending part of the duodenum adjacent to?

Answer 13

Aorta

Question 14

What does the ascending part of the duodenum ascend up to?

Answer 14

Inferior border of body of pancreas

Question 15

What structures is the inferior part of the duodenum anterior to?

Answer 15

IVC

Aorta

Question 16

What structures is the inferior part of the duodenum inferior to?

Answer 16

Pancreas

Question 17

What structures is the inferior part of the duodenum posterior to?

Answer 17

Superior mesenteric artery and vein

Question 18

What is the name of the junction between the duodenum and the jejunum?

Answer 18

Duodenojejunal flexure

Question 19

What shape is the duodenum?

Answer 19

C shape

Question 20

Where does the jejunum begin?

Answer 20

Duodenojejunal flexure

Question 21

Where does the jejunum end? Where does the ileum begin?

Answer 21

No clear demarcation between the jejunum and ileum

Question 22

How do the jejunum and ileum relate to the peritoneum?

Answer 22

Both intraperitoneal

Question 23

What else does the mesentery attaching to the jejunum and ileum attach to?

Answer 23

Posterior abdominal wall

Question 24

How does the mesentery of the jejunum and ileum attach to the posterior abdominal wall?

Answer 24

In an obliquely inferior direction to the right

from the duodenojejunual flexure to the ileocaecal valve

Question 25

Where are the blood vessels supplying the jejunum and ileum located?

Answer 25

In the mesentery of the jejunum and ileum

Question 26

What is the arrangement of blood vessels supplying the jejunum and ileum?

Answer 26

Form loops, called arcades

Straight arteries branch off, called vasa recta

Question 27

How do the walls of the jejunum and ileum compare to each other?

Answer 27

Jejunum has a thicker wall

Ileum has a thinner wall

Question 28

How do the lumens of the jejunum and ileum compare to each other?

Answer 28

Jejunum has a wider lumen

Ileum has a narrower lumen

Question 29

How do the blood supplies of the jejunum and ileum compare to each other?

Answer 29

Jejunum has fewer arcades, longer vasa recta

Ileum has more arcades, shorter vasa recta

Question 30

How do the colours of the jejunum and ileum compare to each other?

Answer 30

Jejunum is more red

Ileum is more pink

Question 32

How do the mesentery of the jejunum and ileum compare to each other?

Answer 32

Jejunum mesentery has less fat in it

Ileum mesentery has more fat in it

Question 33

Where does the ileum end?

Answer 33

Ileo-caecal valve

Question 34

How do the plicae circulares of the jejunum and ileum compare to each other?

Answer 34

Jejunum has more, thicker and taller plicae circulares

than ileum