Freebase(0.00 / 0 votes)Rate this definition: Commonly used in medicine, the word decubitus is used to mean lying down. It is derived from the Latin verb âdecumbereâ meaning to lie down.
The brain regulates metabolism and manages other functions to keep your body temperature within a normal range. But the brain can only do so much, and a host of outside factors can affect your body temperature. Controlling and managing these outside factors is key to maintaining a normal body temperature.
The skin has sweat glands which excrete sweat. These glands help in  regulating body temperature because when it is hot the glands  excrete the heat from the body through swâ¦eat and when it is cold  the vessels are hidden deeper inside the skin to help retain the  warmth.