Which of the following is an example of a negative feedback mechanism in the body?

Question

rapid breathing to bring in more oxygen during rest

increased production of red blood cells during physical activity

increased blood flow to the brain during sleep

sweating to reduce body tempurature

Answer 1

The example of a negative feedback mechanism in the body from the options you provided is sweating to reduce body temperature.

In this mechanism, when the body temperature rises, the hypothalamus in the brain detects this change and activates the sweat glands. Sweating cools the body down as sweat evaporates from the skin, helping to restore the normal body temperature. This is a classic example of negative feedback, where the body responds to a change (increased temperature) by initiating processes that counteract that change (sweating to cool down).

Answer 2

u sure

Answer 3

Yes, I am sure. Sweating to reduce body temperature is indeed a classic example of a negative feedback mechanism.

In negative feedback mechanisms, the body responds to a change (such as an increase in body temperature) by initiating processes that counteract that change (such as sweating to cool the body down). This helps to maintain homeostasis.

Here’s a brief look at why the other options do not qualify as negative feedback:

• Rapid breathing to bring in more oxygen during rest: This is more of a response to an increased demand for oxygen rather than a corrective feedback mechanism.

• Increased production of red blood cells during physical activity: This can be seen as a compensatory mechanism but does not primarily function to negate a change; rather, it's more of an adaptation to increased needs.

• Increased blood flow to the brain during sleep: This doesn’t directly counteract a change; rather, it's a physiological response that occurs without necessarily negating an existing condition.

Therefore, among the options given, sweating to reduce body temperature is the best example of a negative feedback mechanism in the body.