BIO - digestive Flashcards Preview

DAT Kaplan > BIO - digestive > Flashcards

Flashcards in BIO - digestive Deck (17)
Loading flashcards...
1

the chemical and mechanical receptors that control digestion are located in the

walls of the tract organs

2

Which system is involved in distributing the absorbed lipids to the peripheral tissue?

lymphatic

3

hepatic portal circulation -- absorbed nutrients for metabolic processing or storage

collects

4

from lumen the four basic layers that make up walls of every organ in the alimentary canal

mucosa, submucosa, muscularis externa, serosa

5

hormone that increases output of enzyme-rich pancreatic juice and stimulates contraction of the gallbladder to release bile is

cholecystokinin

6

T/F: all lipoproteins have the same lipid density

true

7

an electrolyte is a compound that dissociates well in water; glucose is -- electrolyte

glucose

8

saliva includes the following solutes: electrolytes, digestive enzyme, --, lysozyme and IgA

mucin

9

initiates protein digestion

stomach

10

the acid secretions in the stomach are stimulated by the presence of

protein and peptide fragments

11

digestive enzyme pepsinogen is secreted by

chief cells of the stomach

12

which nutrients yield 4 calories per gram?

glucose and proteins

13

bacteria of large intestine plays an essential role in synthesizing

vitamin K and some vitamin Bs

14

for normal hemoglobin production in RBCs , the necessary stomach secretion is

intrinsic factor

15

most nutrients are absorbed through the mucosa of the intestinal villi by

active transport

16

which organ secretes intrinsic factor and absorbs caffeine

stomach (parietal cells)

17

what prevents pepsin (a hydrolytic enzyme produced by cells lining the stomach) from degrading the lining of the stomach?

pepsin remains a zymogen until cleaved by HCl