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Motor Neurons, Gamma MeSH Descriptor Data 2023


MeSH Heading
Motor Neurons, Gamma
Tree Number(s)
A08.675.655.500.525
A11.671.655.500.525
Unique ID
D009047
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D009047
Scope Note
Motor neurons which activate the contractile regions of intrafusal SKELETAL MUSCLE FIBERS, thus adjusting the sensitivity of the MUSCLE SPINDLES to stretch. Gamma motor neurons may be "static" or "dynamic" according to which aspect of responsiveness (or which fiber types) they regulate. The alpha and gamma motor neurons are often activated together (alpha gamma coactivation) which allows the spindles to contribute to the control of movement trajectories despite changes in muscle length.
Entry Term(s)
Gamma Motorneurons
Motor Neurons, Gamma-Efferent
Neurons, Fusimotor
Neurons, Gamma Motor
NLM Classification #
WL 102.7
See Also
Muscle Spindles
Public MeSH Note
91; was see under MOTOR NEURONS 1979-90; was MOTOR NEURONS, GAMMA EFFERENT see under MOTOR NEURONS 1975-78
Online Note
use MOTOR NEURONS, GAMMA to search MOTOR NEURONS, GAMMA EFFERENT 1975-78
History Note
91(79); was see under MOTOR NEURONS 1979-90; was MOTOR NEURONS, GAMMA EFFERENT see under MOTOR NEURONS 1975-78
Date Established
1991/01/01
Date of Entry
1974/11/11
Revision Date
2014/06/13
Motor Neurons, Gamma Preferred
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