In order for your body to work properly, your nervous system needs to be working properly. Your nervous system is responsible for helping your brain communicate with your body and helping your body ...

Your sympathetic nervous system is one of the branches of your autonomic nervous system. It controls functions under unconscious control related to “fight or flight.” Your nervous system plays a ...

Your autonomic nervous system (ANS) is the part of your central nervous system (CNS) that controls unconscious activities like breathing and digestion. This system is always working, whether or not ...

Late in pregnancy, the human body carefully prepares fetuses for the rigors of life outside the protection of the womb. Levels of cortisol, a stress hormone, ramp up and spike during labor.

From the Laboratories of Physiology, Harvard Medical School. Select the format you want to export the citation of this publication.

Autonomic dysreflexia (AD) is when your involuntary nervous system overreacts to external or bodily stimuli. It is a serious condition considered a medical emergency. AD is also known as autonomic ...

The autonomic nervous system is a complex network of cells that controls the body’s internal state. It regulates and supports many different processes, often outside of a person’s conscious awareness.

The sympathetic nervous system (SNS) is part of the autonomic nervous system (ANS), which also includes the parasympathetic nervous system (PNS). The sympathetic nervous system activates what is often ...

The nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions. The nervous system of vertebrate ...