thermoregulation
- Created by: alexandratay
- Created on: 25-03-22 09:51
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- Thermoregulation
- When you're too cold - Vasoconstriction
- Skeletal muscles contract and we shiver
- These contractions need energy for respiration, and some of this is released as heat
- Nerve impulses are sent to the hair erector muscles in the dermis, which contract
- This raises the skin hairs and traps a layer of insulating air
- Nerve impulses are sent to the hair erector muscles in the dermis, which contract
- These contractions need energy for respiration, and some of this is released as heat
- Skeletal muscles contract and we shiver
- When you're too hot - Vasodilation
- Sweat glands in the dermis release more sweat
- The sweat evaporates, transferring energy from the skin to the environment
- Sweat glands in the dermis release more sweat
- 37 degrees is the temperature that enzymes work best in
- If body temperature gets too high, the enzymes denature and become less effective at catalysing reactions such as respiration
- This process is controlled by the thermoregulatory centre in the brain
- Contains receptors sensitive to the temperature of the blood
- The hypothalamus responds to this information by sending nerve impulses to effectors in the skin to maintain body temperature.
- Contains receptors sensitive to the temperature of the blood
- This process is controlled by the thermoregulatory centre in the brain
- If body temperature gets too high, the enzymes denature and become less effective at catalysing reactions such as respiration
- When you're too cold - Vasoconstriction
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