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Flashcards in Chapter 26 Deck (24)
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1

3 digestive processes in the stomach

physical digestion
mechanical digestion
chemical digestion

2

what mechanical digestion does the stomach do?

churning

3

how does chemical digestion happen in the stomach?

- HCl denatures functional and structural units of proteins
- Proteins are broken down by pepsin

4

how does physical digestion happen in the stomach?

the low pH denatures proteins

5

what breaks down starch in the mouth?

amylase

6

what initiates constant mixing

intrinsic pacemaker cells

7

where are all carbs transported?

to the liver via the hepatic portal vein

8

what needs to happen to lipids in order to digest them?

emulsification

9

Fat-soluble vitamins

A, D, E, and K

10

Water-soluble vitamins

vitamin C and B vitamins

11

4 Digestive Processes of the mouth

Ingestion
Propulsion
Mechanical Digestion
Chemical Digestion

12

2 Digestive Processes of the small intestine

Chemical Digestion
Physical Digestion

13

where does primary active transport get energy from?

hydrolysis

14

term for when more that one substance is transported at the same time during active transport

cotransport

15

term for when substances transported in the same direction during active transport

Symport

16

term for when substances transported in opposite directions

Antiport

17

what does secondary active transport depend on?

the ion gradient created by the primary transport

18

how are vitamins A, D, E, and K absorbed?

with fat in the small intestine through lacteals

19

what is the total fluid turnover in he digestive system?

9L/day

20

where is 95% of water absorbed

in the small intestine
- the rest is absorbed in the large intestine

21

How are vitamin C and B absorbed?

by diffusion or by passive or active transporters

22

digestion of what would be effected the most if the liver were severely damaged?

lipids

23

how are most nutrients absorbed through the mucosa of the intestinal villa?

active transport

24

what splits up triglycerides?

lipase