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Flashcards in BIO - digestive Deck (17)
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1
Q

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

A

walls of the tract organs

2
Q

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

A

lymphatic

3
Q

hepatic portal circulation – absorbed nutrients for metabolic processing or storage

A

collects

4
Q

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

A

mucosa, submucosa, muscularis externa, serosa

5
Q

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

A

cholecystokinin

6
Q

T/F: all lipoproteins have the same lipid density

A

true

7
Q

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

A

glucose

8
Q

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

A

mucin

9
Q

initiates protein digestion

A

stomach

10
Q

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

A

protein and peptide fragments

11
Q

digestive enzyme pepsinogen is secreted by

A

chief cells of the stomach

12
Q

which nutrients yield 4 calories per gram?

A

glucose and proteins

13
Q

bacteria of large intestine plays an essential role in synthesizing

A

vitamin K and some vitamin Bs

14
Q

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

A

intrinsic factor

15
Q

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

A

active transport

16
Q

which organ secretes intrinsic factor and absorbs caffeine

A

stomach (parietal cells)

17
Q

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

A

pepsin remains a zymogen until cleaved by HCl