Question

2. Vasoconstriction can increase preload to the heart, but what are its consequences to the cardiovascular system?

a. Increased afterload b. Activation of the RAA system c. Hypotension d. Decreased stroke volume e. Increased stroke volume

Answer 1

Answer:

a. Increased afterload

e) Increased stroke volume

Explanation: Venoconstriction (Constriction of venous (capacitance) vessels) increases venous blood pressure and increases cardiac preload and cardiac output by the Frank-Starling mechanism, which increases arterial pressure.

Vasoconstriction of arteries increases peripheral resistance to blood flow resulting in increased afterload.