Which of the following would be an appropriate homeostatic...

Which of the following would be an appropriate homeostatic response to a drop in blood pressure below what is normal?
a. heart rate decreases
b. vasoconstriction of arterioles
c. force of cardiac contraction decreases
d. both (a) and (b)

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Baroreceptor Reflex

The baroreceptor reflex is a rapid, negative feedback mechanism involving sensors located in the walls of blood vessels. These receptors detect changes in blood pressure and signal the central nervous system to initiate adjustments, such as enhancing sympathetic output to increase heart rate and cause vasoconstriction when blood pressure falls.

Autonomic Nervous System (ANS)

The ANS plays a crucial role in involuntary control of bodily functions. In the context of blood pressure regulation, the sympathetic division is especially important as it mediates responses like increased heart rate and vasoconstriction to counteract a drop in blood pressure.

Homeostasis

Homeostasis refers to the regulation and maintenance of a stable internal environment in the body in the face of external changes. It involves various mechanisms that detect deviations from a set point and trigger responses aimed at restoring balance.

Blood Pressure Regulation

This encompasses the body’s multiple mechanisms, such as adjustments in heart rate, vascular resistance, and cardiac contractility, that are activated to maintain blood pressure within a normal range despite fluctuations in conditions.

Transcript

Please give Ace some feedback