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Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?
- a)Chemoreceptors
- b)Baroreceptors
- c)Volume receptors
- d)Stretch receptors
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which receptors are responsible for detecting changes in arterial pres...
Understanding Baroreceptors
Baroreceptors are specialized sensory receptors located primarily in the walls of blood vessels, particularly in the carotid sinuses and aortic arch. They play a crucial role in the regulation of blood pressure and heart rate.
Function of Baroreceptors
- Pressure Detection: Baroreceptors sense changes in arterial blood pressure. When blood pressure rises, the walls of the arteries stretch, activating these receptors.
- Signal Transmission: Once activated, baroreceptors send signals via afferent pathways to the brain, particularly to the medulla oblongata, which is responsible for autonomic control of the heart.
- Heart Rate Regulation: The brain interprets the signals and adjusts heart rate and vascular tone accordingly. For instance, an increase in blood pressure leads to a decrease in heart rate (bradycardia) to prevent over-exertion of the heart.
Comparison with Other Receptors
- Chemoreceptors: These detect changes in blood chemistry (e.g., CO2, O2, and pH) rather than pressure.
- Volume Receptors: Located in the atria and great veins, they sense blood volume changes but are not primarily responsible for immediate blood pressure adjustments.
- Stretch Receptors: While they detect stretch, their role is broader and not exclusively linked to arterial pressure regulation.
Conclusion
In summary, baroreceptors are essential for detecting rapid changes in arterial pressure and regulating heart rate. This feedback mechanism ensures that the cardiovascular system maintains optimal function and homeostasis in response to varying physiological demands.
Baroreceptors are specialized sensory receptors located primarily in the walls of blood vessels, particularly in the carotid sinuses and aortic arch. They play a crucial role in the regulation of blood pressure and heart rate.
Function of Baroreceptors
- Pressure Detection: Baroreceptors sense changes in arterial blood pressure. When blood pressure rises, the walls of the arteries stretch, activating these receptors.
- Signal Transmission: Once activated, baroreceptors send signals via afferent pathways to the brain, particularly to the medulla oblongata, which is responsible for autonomic control of the heart.
- Heart Rate Regulation: The brain interprets the signals and adjusts heart rate and vascular tone accordingly. For instance, an increase in blood pressure leads to a decrease in heart rate (bradycardia) to prevent over-exertion of the heart.
Comparison with Other Receptors
- Chemoreceptors: These detect changes in blood chemistry (e.g., CO2, O2, and pH) rather than pressure.
- Volume Receptors: Located in the atria and great veins, they sense blood volume changes but are not primarily responsible for immediate blood pressure adjustments.
- Stretch Receptors: While they detect stretch, their role is broader and not exclusively linked to arterial pressure regulation.
Conclusion
In summary, baroreceptors are essential for detecting rapid changes in arterial pressure and regulating heart rate. This feedback mechanism ensures that the cardiovascular system maintains optimal function and homeostasis in response to varying physiological demands.
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Community Answer
Which receptors are responsible for detecting changes in arterial pres...
The correct answer is Option B: Baroreceptors.
Baroreceptors, located on the walls of arteries, detect changes in arterial pressure and help regulate heart rate. An increase in arterial pressure triggers a parasympathetic response, lowering the heart rate, while a decrease in pressure triggers a sympathetic response, increasing heart rate.
Baroreceptors, located on the walls of arteries, detect changes in arterial pressure and help regulate heart rate. An increase in arterial pressure triggers a parasympathetic response, lowering the heart rate, while a decrease in pressure triggers a sympathetic response, increasing heart rate.
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Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer?.
Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which receptors are responsible for detecting changes in arterial pressure and regulating heart rate accordingly?a)Chemoreceptorsb)Baroreceptorsc)Volume receptorsd)Stretch receptorsCorrect answer is option 'B'. Can you explain this answer?.
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