The mouth starts the digestion process by breaking food down into a more easily digestible form. It does this through a combination of mechanical and chemical digestion. After people take food in ...

The vagus nerve is one of 12 pairs of cranial nerves in the body. It’s involved in various bodily functions, including digestion, heart rate, and breathing. There are 12 cranial nerves in the body.

The central nervous system (CNS) consists of the brain and the spinal cord and controls most functions of the body and the mind. The CNS governs voluntary movements, such as walking, and involuntary ...