(A) Illustration of myelinated nerve fiber and saltatory conduction of action potential. An example of PNS myelinated nerve fiber is shown. (B) Illustration of transverse section of myelinated axon at ...

The trochlear nerve is also known as cranial nerve IV (CN-IV). It is the only cranial nerve that emerges dorsally from the brain (near the back), giving it the longest pathway. It is the smallest ...

The obturator nerve is a large, multibranched nerve that travels through your pelvis to your inner thigh. This nerve helps you feel sensations like temperature and pain in your lower limbs. It also ...

Thoracic nerves The thoracic nerves refer to the cluster of nerve fibers found in the upper body, particularly within the chest region. These nerve fibers are considered spinal nerves, which carry and ...

Click on the labels below to find out more about your nervous system and senses. Your spinal cord can be divided into four sections shown in green, blue, pink and turquoise. Nerves emerging from these ...

The central nervous system consists of the brain and spinal cord. The central nervous system controls thought, movement, and emotion, as well as breathing, heart rate, hormones, and body temperature.