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- A negative feedback system reverses a change in a controlled condition.
- Blood pressure (BP) is the force of blood against the walls of blood vessels.
- An increase in heart rate or force causes blood pressure (BP) to rise.
- A rise in blood pressure acts as a stimulus in a feedback system.
- Baroreceptors are pressure-sensitive receptors located in blood vessel walls.
- Baroreceptors detect increases in blood pressure (BP).
- Baroreceptors send nerve impulses to the brain.
- The brain acts as the control center in blood pressure regulation.
- The brain processes input and sends nerve impulses to effectors.
- The heart and blood vessels act as effectors.
- The heart decreases heart rate in response to signals from the brain.
- Blood vessels undergo dilation, which means widening.
- Decreased heart rate and vessel dilation reduce blood pressure (BP).
- The response returns blood pressure to normal levels.
- The response negates the original increase in blood pressure (BP).
- Reversal of the original stimulus defines a negative feedback system.
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