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Definitions from WordNet

Definitions from the Web

Term: Motor Neuron

Description:

A motor neuron is a type of nerve cell (neuron) that transmits signals from the brain or spinal cord to muscles or glands throughout the body. These specialized cells are responsible for initiating and controlling voluntary movements and are essential components of the central nervous system.

Senses/Usages:

1. Medical

In the medical field, motor neurons play a crucial role in the functioning of the musculoskeletal system and are involved in various conditions and diseases such as:

• Motor neuron diseases: A group of progressive neurological disorders that affect the function of motor neurons, including amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy.
• Motor neuron injury: Damage to motor neurons caused by trauma, accidents, or certain medical conditions.
• Motor neuron regeneration: The process of restoring or repairing damaged motor neurons.

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2. Neuroscience

In neuroscience, the study of motor neurons helps understand the complexity of neural circuits, motor control, and related research areas such as:

• Motor cortex: The region of the cerebral cortex involved in planning, initiating, and coordinating voluntary muscle movements.
• Motor unit: A single motor neuron and all the muscle fibers it innervates.
• Motor neuron excitability: The ability of motor neurons to respond to electrical or chemical stimuli.

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3. Popular Usage

In popular discourse, motor neurons are often mentioned in the context of body movement, physical coordination, and the following:

• Motor skills development: The acquisition and refinement of motor skills through practice and learning.
• Motor neuron training: Techniques or exercises designed to enhance motor neuron function and coordination.
• Motor neuron sports injuries: Injuries affecting motor neurons due to sports-related activities.

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Sample Sentences:

1. The motor neurons fired rapidly, signaling the muscles to contract and initiate movement.
2. Motor neuron diseases, such as ALS, lead to progressive muscle weakness and eventual paralysis.
3. Researchers are studying motor neurons to better understand the brain's control over muscle coordination.
4. Emma's dedication to motor skills development allowed her to excel in various sports.
5. After the accident, Joe underwent extensive rehabilitation to restore damaged motor neurons.