alpha motoneurons

alpha motoneurons
neurons of the anterior spinal cord that give rise to the alpha fibers which innervate the skeletal muscle fibers. Cf. anterior horn cell.

Medical dictionary. 2011.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • anterior horn cells — motoneurons whose cell bodies are in the anterior horn of the spinal cord; see alpha motoneurons and gamma motoneurons, under motoneuron …   Medical dictionary

  • Muscle spindle — Latin fusus neuromuscularis Code TH H3.11.06.0.00018 Muscle spindles are sensory receptors within the belly of a muscle, which primarily detect changes in the length of this muscle. They convey length information to the central nervous system via …   Wikipedia

  • Motor neuron — Neuron: Motor neuron Micrograph of the hypoglossal nucleus showing motor neurons with their c …   Wikipedia

  • Gamma motoneuron — Neuron: Gamma motorneuron A muscle spindle, with γ motor and Ia sensory fibers NeuroLex ID …   Wikipedia

  • gamma loop — a three part reflex arc consisting of gamma motoneurons that send impulses along the gamma fibers to the intrafusal fibers, causing the muscle spindle to contract; that in turn excites afferent impulses, which pass through the posterior root to… …   Medical dictionary

  • Renshaw-Zelle — Die Renshaw Zellen wurden nach ihrem Erstbeschreiber, dem englischen Neurophysiologen Birdsey Renshaw (1911–1948) benannt. Es handelt sich um inhibitorische (hemmende) Interneurone mit dem Transmitter Glycin in den Vorderhörnern der grauen… …   Deutsch Wikipedia

  • Onuf's nucleus — Medulla spinalis Substantia grisea (Onuf s nucleus not labeled, but region is visible) Latin nucleus nervi pudendi …   Wikipedia

  • Autonomic nervous system — The autonomic nervous system Blue = parasympathetic Red = sympathetic Latin divisio autonomica systematis nervosi peripherici The autonomic nervous system (ANS or visceral nervous syste …   Wikipedia

  • Synaptogenesis — is the formation of synapses. Although it occurs throughout a healthy person s lifespan, an explosion of synapse formation occurs during early brain development. Synaptogenesis is particularly important during an individual s critical period of… …   Wikipedia

  • Motor unit recruitment — is the progressive activation of a muscle by successive recruitment of contractile units (motor units) to accomplish increasing gradations of contractile strength. A motor unit consists of one motor neuron and all of the muscle fibers it… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”