Central Nervous System (CNS): The central nervous system is that part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS) is one of the two major ...

This article, which is the second of a six-part series on the nervous system, considers the structure and key functions of the brain, starting with the cerebrum. This article, the second of a series ...

The conditions inside our body must be carefully controlled if the body is to function effectively. The conditions are controlled in two ways with chemical and nervous responses. A bundle of neurones ...

Sea urchins look like an inanimate bundle of needles, but a closer look at these alien-like creatures reveals a surprisingly ...

All bilateral creatures have some asymmetry, such as the human heart being located slightly to the left and the liver being ...

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 ...