The sympathetic nervous system, which helps your heart and other vital organs function all the time, increases activity in response to danger or stress, preparing the body for extra demands. Stress is ...

Hormones are a crucial part of the body's signaling system, and the controlled release of these compounds affects tissues around the body. Each of these hormones induces specific responses from these ...

Each part of the nervous system uses internal checks and balances to regulate its activity, responding to various factors like mood, health status, and the external environment.¹ These regulatory ...

The autonomic nervous system is known as the control center for involuntary bodily processes such as the beating of our hearts and our breathing. The fact that this part of the nervous system also has ...

Long after a traumatic event has passed, a person’s nervous system can be reactivated whenever they perceive danger, whether or not danger is present. This feeling of heightened arousal is like being ...

Aditi Garg: Place your left hand on the abdomen, your right hand on the chest. Sit comfortably. And then as we breathe in, we ...

You’re sitting in a perfectly comfortable room when suddenly a quick shiver ripples through your body. It’s not cold, you’re not scared, and you’re definitely not coming down with anything—yet your ...

Strange sea creatures called ctenophores have a fused nerve net where scientists expected to see synapses. Did they evolve their nervous system separately from other animals? When you purchase through ...