ch 17 endocrine pt 2

Question 1

Hormones binds to receptor and activates what?

Answer 1

G protein

Question 2

Adenylate cyclase generates what?

Answer 2

cAMP

Question 3

cAMP activates what?

Answer 3

Protein kinase

Question 4

PIP2 is split into what?

Answer 4

DAG and IP3

Question 5

What is a protein kinase

Answer 5

Carrys a phosphate

Question 6

What is DAG?

Answer 6

Is a second messenger of the membrane that activates protein kinase

Question 7

What is IP3?

Answer 7

Is a second messenger that leaves the membrane and causes an increase in the levels of CA 2+ in the cytosol.

Question 8

What is Ca 2+

Answer 8

Acts as a third messenger, activation kinases and interacting with ion channels.

Question 9

Actions of water-soluble hormones?

Answer 9

Enzymes can be activated or inhibited, secretion, muscles contracting or relaxing.

Question 10

What is a synergistic interaction?

Answer 10

How hormones work together

Question 11

What is a permissive interaction?

Answer 11

Need one hormone to trigger another hormone

Question 12

What is an antagonistic interaction?

Answer 12

Hormones work against each other

Question 13

What is a tract?

Answer 13

Bundles of axons

Question 14

What is a nuclei?

Answer 14

Cell bodies

Question 15

What is hypothalamus-hypophyseal portal system?

Answer 15

Plexus of blood vessels

Question 16

Hormones bind to nuclear receptors

Answer 16

Lipid-soluble

Question 17

Hormones bind to membrane-bound receptors

Answer 17

Water-soluble