You know that temperature measures how hot something is. What causes temperature?

Explanation:

A part of your brain called the hypothalamus controls your body temperature. In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. So when a fever comes on, it's a sign that something is going on in your body.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante