Receptors

Question 1

A1 receptor action when stimulated

Answer 1

• vasoconstriction
• activation of a1 Adrenergic receptors on arterial vascular smooth muscle cells which results in smooth muscle contraction and increased SVR
• results in peripheral vasoconstriction

Question 2

B1 action when stimulated

Answer 2

-increased contractility, automaticity, AV conduction and HR
- enchanted contractility
-results in increased HR and contractility

Question 3

B2 action when stimulated

Answer 3

-vasodilation and bronchial dilation
- dilation of coronary arteries

Question 4

V1 primary action

Answer 4

Stimulation mediates constriction

Question 5

Dopaminergic primary action

Answer 5

Increased blood flow to kidneys and mesentery