Lecture 22

Question 1

What are the three main regions of the abdominopelvic cavity?

Answer 1

1. Duodenum
2. Jejunum
3. Ileum

Question 2

How is the small intestine held in place?

Answer 2

Mesentery

Question 3

What does the mesentery contain?

Answer 3

Arteries, veins, nerves, and lymphatics

Question 4

What are plicae circulares?

Answer 4

Permanent large folds of small intestine

Question 5

Numerous ____ are found on the surface of the plicae circulares?

Answer 5

Villi

Question 6

What allows the villi to wiggle back and forth?

Answer 6

Muscularis Mucosae

Question 7

What is the core of villi made of?

Answer 7

FCT (lamina propria)

Question 8

What vessels do villi contain?

Answer 8

• Lymph lacteal

- Capillary network

Question 9

Where does deoxygenated blood absorb in the small intestine enter?

Answer 9

The mesenteric veins then drain into the hepatic portal vein

Question 10

Where do lymph lacteals drain into?

Answer 10

The cisterna chyli, thoracic duct, and then the left subclavian vein

Question 11

What type of epithelium is in the small intestine?

Answer 11

Simple columnar

Question 12

Where are microvilli found?

Answer 12

On the apical surface to increase surface area further

Question 13

Enterocytes

Answer 13

Absorptive cells

Question 14

Goblet cells

Answer 14

Secret mucous for protection

Question 15

Stem cells

Answer 15

Make all cell types

Question 16

Paneth cells

Answer 16

Granules and antibacterial enzymes

Question 17

Endocrine cells

Answer 17

Secrete hormones