Question

Which of the following responses to a drop in blood pressure would raise blood pressure the fastest?

a. Increase cardiac contractility

b. Increase heart rate

c. Increase in vasoconstriction (and peripheral resistance)

d. Decrease in kidney filtration rate

e. All the above occur at about the same rate

Answer 1

e. All the above occur at about the same rate

Short-term adjustments to blood pressure are made by sympathetic nervous system (its actions increase cardiac contractility, heart rate and peripheral resistance) and renin–angiotensin-aldosterone system (RAAS), which is activated by decreasing in kidney filtration rate.