GI Tract

Question 1

What secretes gastrin?

Answer 1

G cells of the stomach & duodenum

Question 2

What do gastrins do?

Answer 2

Stimulate HCl from parietal gland

Question 3

Where are chief cells producd?

Answer 3

Stomach

Question 4

Where is pepsinogen secreted from?

Answer 4

Stomach

Question 5

What doesn’t secrete bicarbonates?

Answer 5

Chief cells of the stomach

Question 6

Where is intrinsic factor secreted from?

Answer 6

Fundic portion of stomach (by parietal cells for Vit B12)

Question 7

Stimulated Histamine H2 receptors make?

Answer 7

Parietal cells (Release HCl in the stomach)

Question 8

Where is secretin made?

Answer 8

S cells of the duodenum

Question 9

Where is lactase made?

Answer 9

Brush border membrane

Question 10

How is lactose made?

Answer 10

Glucose + galatose

Question 11

How is sucrose made?

Answer 11

Glucose + fructose

Question 12

How is maltose made?

Answer 12

Glucose + glucose

Question 13

Which sugar is not absorbed in small intestines?

Answer 13

Malatose

Question 14

What is the main movement in the small intestine?

Answer 14

Segmentation

Question 15

What is NOT absorved in the jejunum?

Answer 15

Absorbed: iron, Na,Cl, K

Question 16

What is a tissue that attaches the popsterior walll of peritoneal cavity to the jejunum?

Answer 16

Mesentery

Question 17

What’s the difference between colon and all other parts of the digestive system?

Answer 17

Colon doesn’t have villi

Question 18

Transverse colon and lungs are innervated by?

Answer 18

Vagus nerve –> motor parasympathetic fibers

Question 19

What cells secrete bicarbonate?

Answer 19

Epithelial cells lining the pancreas

Question 20

Centroacinar cells are found in what organ?

Answer 20

Pancreas

Question 21

How does trypsinogen becomse trypsin?

Answer 21

Altering N terminal peptide

Question 22

What acts adjuntivitely with lipase?

Answer 22

Bile