【单选题】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 baroreceptor...
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 ↓.