innervation - définition. Qu'est-ce que innervation
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Qu'est-ce (qui) est innervation - définition

ENCLOSED, CABLE-LIKE BUNDLE OF AXONS IN THE PERIPHERAL NERVOUS SYSTEM
Nerves; Innervation; Innervate; Innervated; Nerve terminal; Nerve fibers; Nerve endings; Classification of peripheral nerve fibers; Classification of nerve fibers; Peripheral nerve; Neurofibra; A beta fiber; A beta fibers; Nerve branch; Nerve branches; Inervation; Myelinated nerve fibers; Endoneurial fluid
  • Cross-section of a nerve

Innervation         
·noun The act of innerving or stimulating.
II. Innervation ·noun The distribution of nerves in an animal, or to any of its parts.
III. Innervation ·noun Special activity excited in any part of the nervous system or in any organ of sense or motion; the nervous influence necessary for the maintenance of life,and the functions of the various organs.
Reciprocal innervation         
MODEL THAT DESCRIBES THE CONTROL OF AGONIST AND ANTAGONIST MUSCLES
Sherrington's law of reciprocal innervation; Sherrington's law; Sherrington's Law
René Descartes (1596–1650) was one of the first to conceive a model of reciprocal innervation (in 1626) as the principle that provides for the control of agonist and antagonist muscles. Reciprocal innervation describes skeletal muscles as existing in antagonistic pairs, with contraction of one muscle producing forces opposite to those generated by contraction of the other.
Innervate         
·vt To supply with nerves; as, the heart is innervated by pneumogastric and sympathetic branches.

Wikipédia

Nerve

A nerve is an enclosed, cable-like bundle of nerve fibers (called axons) in the peripheral nervous system.

Axons transmit electrical impulses. Nerves have historically been considered the basic units of the peripheral nervous system. 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. Each axon, within the nerve, is an extension of an individual neuron, along with other supportive cells such as some Schwann cells that coat the axons in myelin.

Within a nerve, each axon is surrounded by a layer of connective tissue called the endoneurium. The axons are bundled together into groups called fascicles, and each fascicle is wrapped in a layer of connective tissue called the perineurium. Finally, the entire nerve is wrapped in a layer of connective tissue called the epineurium. Nerve cells (often called neurons) are further classified as sensory, motor, or mixed nerves.

In the central nervous system, the analogous structures are known as nerve tracts.