Adrenergic Receptors

Question 1

Alpha 1

Answer 1

Gq

Incr: vascular SM contraction. Mydriasis. Prostate contraction. Heart contraction force.

Question 2

Alpha 2

Answer 2

Gi
Decr: sympathetic outflow, insulin release, lipolysis, aqueous humor production
Incr: platelet aggregation

Question 3

Beta 1

Answer 3

Gs - Heart

Incr: HR, contractility, renin, lipolysis

Question 4

Beta 2

Answer 4

Gs - SM relaxation

Incr: Vasodilation, bronchodilation, lipolysis, insulin release, glycogenolysis, aqueous humor production.

Question 5

Beta 3

Answer 5

Gs

Incr: lipolysis, thermogenesis, bladder relaxation

Question 6

D1

Answer 6

Gs

Relaxes renal vascular SM. Activates direct pathway of striatum

Question 7

D2

Answer 7

Gi

Modulates NT release, inhibits direct pathway of striatum.

Question 8

Vascular SM contraciton

Answer 8

a1

Question 9

Mydriasis

Answer 9

a1

Question 10

Increased contraction force

Answer 10

a1

Question 11

Decreased adrenergic outflow

Answer 11

a2

Question 12

Reduced BP

Answer 12

a2

B2

Question 13

Reduced HR

Answer 13

a2

Question 14

Platelet aggregation

Answer 14

a2

Question 15

Increased BP

Answer 15

a1

B1 - renin

Question 16

Increased HR

Answer 16

B1

Question 17

aqueous humor/ intraocular pressure

Answer 17

Increased with B2

Decreased with a2