What response occurs in the cardiovascular system during fast responses to increased blood pressure?
Understand the Problem
The question is asking about the physiological responses of the cardiovascular system to increased blood pressure. This involves understanding how the body reacts to maintain homeostasis, particularly in relation to blood vessel behavior and blood flow dynamics.
Answer
Baroreceptor reflex reduces heart rate and dilates vessels when blood pressure rises.
When blood pressure rises suddenly, baroreceptors in the cardiovascular system increase their firing rate, triggering parasympathetic stimulation. This leads to a decrease in heart rate and dilation of blood vessels, thereby reducing cardiac output and lowering blood pressure.
Answer for screen readers
When blood pressure rises suddenly, baroreceptors in the cardiovascular system increase their firing rate, triggering parasympathetic stimulation. This leads to a decrease in heart rate and dilation of blood vessels, thereby reducing cardiac output and lowering blood pressure.
More Information
The baroreceptor reflex is a rapid response mechanism in which receptors in the aorta and carotid arteries detect changes in blood pressure, prompting adjustments in heart rate and vessel diameter to maintain stability.
Tips
A common mistake is thinking that an increase in blood pressure always results in increased heart rate. In fact, the body often reduces heart rate to counter high blood pressure.
Sources
- Homeostatic Regulation of the Vascular System - Lumen Learning - courses.lumenlearning.com
- What Is the Baroreceptor Reflex? - Cleveland Clinic - my.clevelandclinic.org
AI-generated content may contain errors. Please verify critical information
