INSULIN

Question 1

1st action of insulin:

Answer 1

First, it promotes uptake of glucose by target cells and increases glycogen synthesis

Question 2

2nd action of insulin:

Answer 2

2nd, it prevents fat and glycogen breakdown

Question 3

3rd action of insulin:

Answer 3

3rd, it inhibits gluconeogenesis and increases protein synthesis

Question 4

Glut 1:

Answer 4

Present in all tissues and does not require the actions of insulin

Question 5

Glut 2:

Answer 5

Major transporter for glucose into beta and liver cells

Question 6

Glut 3:

Answer 6

Major transporter for glucose in neutrons and is highly expressed in brain. Does not require insulin for its action

Question 7

Glut 4:

Answer 7

Insulin dependent glucose transporter for skeletal and adipose tissue
- stimulated by insular to move from its inactive site to the cell membrane where it facilitates glucose entry

Question 8

All 4 glut’s:

Answer 8

— Important in the transport ot glucose in to cells of the ns and facilitates glucose movement across blood brain barrier
_ all these glucose transporters move glucose across the cell membrane at a faster rate than would occur with diffusion alone