Normal Body Temperature

1. Body Temperature Drops

1.1. Body receives a message from the brain then sends messages to the rest of the body to...

1.1.1. 1. Constrict the blood vessels to prevent heat loss

1.1.2. 2. Stop the production of sweat

1.1.3. 3. Muscles contract (or shiver) to help heat generation

1.1.4. 4. And uses the deeper layer of fat for warmth

2. Body Temperature Rises

2.1. Receptors in the skin send a message to the brain. The brain then sends a message to the...

2.1.1. ...sweat glands to secrete sweat.

2.1.1.1. This then releases water and salts that evaporate and cools the body down.

2.1.2. ...the blood vessels to widen (otherwise known as vasodilation)

2.1.2.1. The epidermis then releases heat.