The parasympathetic nervous system (PSNS) is one of two major divisions of the larger autonomic system in your body. Its function is to keep the basic functions of your body working as they should.

What's the Digestive System? Your digestive system is a group of connected organs that work together to turn the food you eat into nutrients your body needs to function. It includes your biliary ...

Central nervous system — the brain and spinal cord Peripheral nervous system — the nerves that make your muscles move and tell your brain what your body is feeling Autonomic nervous system — the ...

What Is the Endocrine System? The endocrine system is a network of glands in your body that make the hormones that help cells talk to each other. They’re responsible for almost every cell, organ, and ...