Nerve Definition Anatomy

It is the second of several pairs of cranial nerves. Nerve in anatomy a glistening white cordlike bundle of fibres surrounded by a sheath that connects the nervous system with other parts of the body.

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The great auricular nerve is a sensory branch of the cervical plexus composed of axons from spinal cord segments c2c3.

Nerve definition anatomy. The fibrous portions of a nerve are covered by a sheath called myelin andor a membrane called neurilemma. A nerve provides a common pathway for the electrochemical nerve impulses called action potentials that are transmitted along each of the axons to peripheral organs or in the case of sensory nerves from the periphery back to the central nervous system. A nerve is an enclosed cable like bundle of nerve fibres called axons in the peripheral nervous system.

Any of three nerves the great auricular nerve the posterior auricular nerve or the auricular branch of the vagus nerve cn x. The job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses. It innervates the skin and fascia behind the ear on the lower part of the pinna of the ear and over the angle of the jaw.

Nerve definition one or more bundles of fibers forming part of a system that conveys impulses of sensation motion etc between the brain or spinal cord and other parts of the body. A bundle of fibers that uses electrical and chemical signals to transmit sensory and motor information from one body part to another. The optic nerve is made of ganglionic cells or nerve cells.

It consists of over one million nerve fibers. The nerves conduct impulses toward or away from the central nervous mechanism.

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