Adrenergic Receptors and Agonist Actions

Question 1

Heart

Answer 1

Beta 1 –> Increase HR, AV conduction, and contractility

Question 2

Vessels

Answer 2

Alpha 1 –> vasoconstricts SM vessels

Beta 2 –> relaxes skeletal vessels

Question 3

Lungs

Answer 3

Beta 2 –> bronchodilation

Question 4

GI

Answer 4

Alpha 1 –> constrict sphincter

Beta 2+3 –> relax intestinal muscles

Question 5

Eye

Answer 5

Alpha 1 –> Mydriasis (pupillary relaxation/dilation)

Beta 1/2 –> Increase Aq Humor production –> IOP up

Question 6

GU

Answer 6

Alpha 1 –> Constrict sphincter

Beta 2+3 –> Relax detruser muscle

Question 7

Salivary and Sweat Glands

Answer 7

M3 antagonist or Alpha 1 agonist –> dry

Question 8

Kidney-renin release

Answer 8

Beta 1

Question 9

Alpha 1 adrenergic agonist action

Answer 9

Vasoconstriction, GI and GU sphincter contraction, mydriasis, salivary glands (but really M3 - block M3 –> Xerostomia)