Nerves
Nerves
Nerves (/nɜːrvz/), in the field of anatomy and physiology, are the primary structures in the nervous system that transmit signals between different parts of the body.
Etymology
The term "nerve" is derived from the Latin word "nervus", which means "sinew, tendon, or string".
Definition
Nerves are bundles of long fibers called neurons that transmit signals in the form of electrical impulses. These impulses are responsible for various bodily functions, including sensation, movement, and regulation of bodily functions.
Types of Nerves
There are three main types of nerves in the human body:
- Sensory nerves: These nerves carry sensory information from the body to the brain and spinal cord.
- Motor nerves: These nerves transmit signals from the brain and spinal cord to the muscles, causing them to move.
- Autonomic nerves: These nerves control involuntary or semi-voluntary functions, such as heart rate and digestion.
Related Terms
- Neuron: The basic unit of the nervous system, neurons transmit signals to and from the brain.
- Neurology: The branch of medicine that deals with the nervous system and its disorders.
- Neuropathy: A term for diseases or malfunctions of the nerves.
- Neurotransmitter: Chemicals that transmit signals across a synapse from one neuron to another.
External links
- Medical encyclopedia article on Nerves
- Wikipedia's article - Nerves
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