When the arrector pili muscle contracts, the hair stands up.
(1 point)
Responses
When the arrector pili muscle relaxes, the hair stands up.
When the arrector pili muscle relaxes, the hair stands up.
When the arrector pili muscle contracts, the hair
5 answers
Why does our hair stand erect during cold days?
(1 point)
Responses
To increase body metabolism.
To increase body metabolism.
To cool down skin when sweat is evaporated.
To cool down skin when sweat is evaporated.
To let more blood flow near the skin's surface.
(1 point)
Responses
To increase body metabolism.
To increase body metabolism.
To cool down skin when sweat is evaporated.
To cool down skin when sweat is evaporated.
To let more blood flow near the skin's surface.
To increase body insulation.
When the arrector pili muscles contract in cold conditions, the hair stands erect, creating an insulating layer of air that helps to retain body heat.
What’s the answer
The correct response is to increase body insulation. When the hair stands erect due to the contraction of arrector pili muscles, it helps trap a layer of air, which can provide insulation and help retain body heat in cold conditions.
However, if you are limited to the options you provided:
- To increase body metabolism.
- To cool down skin when sweat is evaporated.
- To let more blood flow near the skin's surface.
None of these are the best answer regarding why hair stands up in the cold. The primary purpose is insulation. If you are specifically limited to the options given, please confirm that additional context or options may need to be considered.
1 answer