GI phys 1

Question 1

What makes up the brush-boarder in the small intestine

Answer 1

Microvilli

Question 2

Lacteals function

Answer 2

lymphatic system role, absorb lipids

Question 3

Goblet cells function

Answer 3

produce mucus

Question 4

Function of microvilli

Answer 4

Give increased surface area to put enzymes, make up brush-border in small intestine

Question 5

Which nerves control secretions and parasympathetic activation

Answer 5

Facial (7) and Glossopharyngeal (9)

Question 6

What stimulate cn 7 and cn9 to secrete when food is in mouth?

Answer 6

Touch receptors when food is in mouth

Question 7

What does amylase breakdown

Answer 7

Take polysaccharides and breakdown (breakdown carbs)

Question 8

What do IgA and lysozyme do in the mouth

Answer 8

destory bacteria

Question 9

What does mucins turn into

Answer 9

mucus

Question 10

Stimuli for pancreatic secretions

Answer 10

Secretin- secretes HCO3 rich juice
CCK- secrete enzyme rich juice

Question 11

Ph of pancreas

Answer 11

8

Question 12

What is the protective function of digestive enzymes in the pancreas

Answer 12

they remain in their inactive form and only activate in lumen so that they dont degrade intestine.

Question 13

Bile is connected to the digestion and absorption of which macronutrient

Answer 13

lipids

Question 14

What does bile help excrete

Answer 14

cholestorol and other lipid waste products

Question 15

What do bile acids form

Answer 15

Micelles (2 key acids- cholic acid and chenodeoxycholic acids)

Question 16

What are the bile pigments

Answer 16

Bilirubin, biliverdin (broken down hemoglobin)

Question 17

Function of bile pigments

Answer 17

get rid of body waste products (broken down RBCs)