FUSIMOTOR NEURON Meaning and
Definition
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A fusimotor neuron refers to a specialized type of motor neuron located in the spinal cord that plays a crucial role in regulating the sensitivity and tension of muscle spindles. These neurons are responsible for controlling the function of intrafusal muscle fibers within the muscle spindles, which are sensory receptors embedded within skeletal muscles.
The fusimotor neurons are further classified into two types, known as dynamic and static fusimotor neurons, based on their specific functions. Dynamic fusimotor neurons primarily influence the rate and sensitivity of muscle spindle response during dynamic movements, such as those involving stretching or contracting the muscle. On the other hand, static fusimotor neurons are responsible for modulating the muscle spindle response during static or sustained muscle contractions.
The activity of fusimotor neurons is controlled by various inputs, including descending signals from the brain, sensory feedback from muscle spindles, and interneurons within the spinal cord. When activated, these neurons adjust the length and tension of muscle spindles, resulting in precise and coordinated muscle contractions, as well as contributing to proprioception - the sense of body position and movement.
Dysfunction or damage to fusimotor neurons can lead to impairments in motor control, muscle coordination, and proprioception. Therefore, studying fusimotor neurons and their mechanisms of action has important implications in understanding motor disorders and developing potential therapeutic strategies to improve motor function.
Common Misspellings for FUSIMOTOR NEURON
- dusimotor neuron
- cusimotor neuron
- vusimotor neuron
- gusimotor neuron
- tusimotor neuron
- rusimotor neuron
- fysimotor neuron
- fhsimotor neuron
- fjsimotor neuron
- fisimotor neuron
- f8simotor neuron
- f7simotor neuron
- fuaimotor neuron
- fuzimotor neuron
- fuximotor neuron
- fudimotor neuron
- fueimotor neuron
- fuwimotor neuron
- fusumotor neuron
- fusjmotor neuron
Etymology of FUSIMOTOR NEURON
The word "fusimotor neuron" consists of two components: "fusi" and "motor neuron".
The term "fusi" is derived from the Latin word "fusus", which means "a spindle". It refers to the spindle-shaped structure of the muscle fibers that these neurons innervate.
The term "motor neuron" refers to a type of neuron that controls the contractions of muscle fibers. The word "motor" originates from the Latin word "motor", meaning "a mover" or "that which imparts motion".
Thus, "fusimotor neuron" combines these two terms to describe a type of motor neuron that innervates the spindle-shaped muscle fibers.
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