By which means will the sympathetic response raise blood pressure? A. Vasoconstriction due to stimulation of alpha receptors B. Vasoconstriction due to stimulation of beta receptors C. Increase cardiac output due to stimulation of alpha receptors D. Increased stroke volume due to stimulation of alpha receptors
Option A. The neurotransmitter epinephrine will connect to the alpha receptor sites of smooth muscle in blood vessels and cause vasoconstriction (besides for blood vessel in skeletal muscle). Choices C and D are incorrect as beta, now no longer alpha receptors growth CO. Choice A is inaccurate as alpha (now no longer beta) produce vasoconstriction.
