A healthy 28-year-old woman stands up from a supine position. Moving from a supine to a standing position results in a transient decrease in arterial pressure that is detected by arterial baroreceptors located in the aortic arch and carotid sinuses. Which of the following sets of cardiovascular changes is most likely to occur in response to activation of the baroreceptors?
A.
Mean circulatory filling pressure ↑ , Strength of cardiac contraction ↑ , Sympathetic nerve activity ↑ .
B.
Mean circulatory filling pressure ↓ , Strength of cardiac contraction ↑ , Sympathetic nerve activity ↑ .
C.
Mean circulatory filling pressure ↓ , Strength of cardiac contraction ↓ , Sympathetic nerve activity ↑.
D.
Mean circulatory filling pressure ↓ , Strength of cardiac contraction ↓ , Sympathetic nerve activity ↓.