Imagine a patient who loses lots of blood and therefore has less stretch of their aorta with each heartbeat. What reflex will result?
A) Baroreceptors increase firing, the vasomotor center increases firing, and skin blood vessels will dilate to cause a compensatory increase in flow.
B) Baroreceptors decrease firing, the cardioacceleratory center increases firing, and cardiac output will exhibit a compensatory increase.
C) Baroreceptors increase firing, the cardioinhibitory center increases firing, and the heart slows significantly to prevent further bleeding.
D) Baroreceptors decrease firing, the cardioinhibitory center and vasomotor centers increase firing, the heart slows, and blood is redirected.

Question

Quizplus · Accepted Answer

When blood volume decreases, baroreceptors decrease firing, leading to increased activity in the cardioacceleratory center, which increases heart rate and cardiac output to compensate for the reduced blood pressure.

Imagine a Patient Who Loses Lots of Blood and Therefore