Which of These Pairs Contains the Two Determinants of Mean

Question

Which of these pairs contains the two determinants of mean arterial pressure
A)stroke volume and compliance of vessel walls
B)heart rate and stroke volume
C)heart rate and end-diastolic volume
D)cardiac output and total peripheral resistance

Accepted Answer

Mean arterial pressure (MAP) is determined by both cardiac output (CO) and total peripheral resistance (TPR) according to the formula MAP = CO x TPR. Therefore, choice D is the correct pair as it contains both determinants of MAP. The other choices only include one determinant of MAP or a factor that indirectly affects MAP.