Small Intestine

Question 1

What are the 3 parts called that the small intestine is divided into?

Answer 1

Duodenum, jejunum and ileum

Question 2

What are the 4 parts of the duodenum?

Answer 2

Superior, descending, horizontal and ascending

Question 3

Describe the superior part

Answer 3

Travels slightly superiorly and posteriorly at the side of the vertical column at the level of L1

Question 4

Describe the descending part

Answer 4

Travels inferiorly over part of the kidney to L3

Question 5

Describe the horizontal part

Answer 5

Travels medically to the left, crossing the aorta at L3

Question 6

Describe the ascending part

Answer 6

Travels superiorly on the left of the aorta to L2 where it becomes the jejunum

Question 7

What does the descending duodenum receive?

Answer 7

Further digestive secretions from the liver and gallbladder via the common bile duct and the pancreas via the main pancreatic duct

Question 8

Where does the jejunum begin?

Answer 8

At the duodenojejundal junction, to the left of the L2 vertebrae

Question 9

What are the jejunum and ileum anchored to?

Answer 9

They are anchored to the posterior body wall by the messengers and are the primary site of nutrient absorption