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Flashcards in GI6 Deck (16):
1

substances move ___ their electrochemical gradients

down

2

charged substances move ____ opposite charges

toward

3

what kind of transport does the GLUT5 use?

passive diffusion

4

what kind of transport does SGLT1 use.

secondary active transport

5

what kind of transport does PEPT1 use?

tertiary active transport

6

what is the Na+ gradient maintained by?

Na+/K+ ATPase

7

what substances use secondary active transport?

glucose, galactose, amino acids

8

the membrane potential is kept ____ inside relative to outside.

negative

9

Na+/K+ ATPase uses what kind of transport?

primary active transport

10

GLUT2 uses what kind of transport?

facilitated diffusion, uniporter

11

how is K+ absorbed in the ileum?

paracellular diffusion

12

what are the 4 steps of digestion and absorption of fats?

1. emulsification
2. hydrolysis
3. micelle formation
4. absorption

13

what are micelles?

products of lipid hydrolysis

14

what are chylomicrons?

polar surface lipids, embedded in protein

15

when does gut closure typically occur in neonates?

24 hours

16

diarrhea occurs when:

there is a mismatch between secretion and absorption