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Hypothalumus.
Temperature
thermometer
detect any changes in the environment (noise level, vibration, temperature)
1 pain 2 pressure 3 temperature
No. You have baroreceptors in your body to detect pressures, however you can detect density of the air by the temperature in which you are inhaling.
thermoreceptors
yes they do ;) the skin for the temperature :)
because skin temperature may be affected by outside environment but blood temperature does not.
Hypothalamus
touch, temperature and pain
The rattlesnake can detect temperature changes of 0.003 °C or less in its immediate surroundings.