motor neuron: meaning, definition, pronunciation and examples
Low (C1+)Technical, medical, scientific, academic
Quick answer
What does “motor neuron” mean?
A specialized nerve cell that transmits signals from the brain or spinal cord to a muscle or gland, causing it to contract or secrete.
Audio
Pronunciation
Definition
Meaning and Definition
A specialized nerve cell that transmits signals from the brain or spinal cord to a muscle or gland, causing it to contract or secrete.
A neuron forming part of a pathway along which nerve impulses pass from the brain or spinal cord to a muscle or gland. They are the final common pathway for the control of bodily movement. Damage or degeneration of motor neurons leads to conditions like amyotrophic lateral sclerosis (ALS).
Dialectal Variation
British vs American Usage
Differences
UK English often uses the spelling 'motor neurone' (with 'e'), while US English consistently uses 'motor neuron'. The pronunciation remains essentially the same.
Connotations
Identical technical meaning; no difference in connotation beyond the spelling.
Frequency
The term is equally frequent in relevant technical contexts in both varieties. The UK spelling with '-e' is common in medical and biological texts.
Grammar
How to Use “motor neuron” in a Sentence
The [ADJ] motor neuron [VERBs] the [NOUN].Damage to motor neurons results in [NOUN/VERB-ing].[DISEASE] affects motor neurons in the [BODY PART].Vocabulary
Collocations
Examples
Examples of “motor neuron” in a Sentence
verb
British English
- The signal will motor the neuron to fire.
- Researchers attempted to motor the cultured neurones artificially.
American English
- The circuit is designed to motor the neuron at a specific frequency.
- Stimulation caused the neurons to motor rapidly.
adverb
British English
- The signal travelled motor-neuronally to the effector.
- (Usage is extremely rare and technical).
American English
- The impulse propagated motor-neuronally down the spinal cord.
- (Usage is extremely rare and technical).
adjective
British English
- The motor neurone pathway is complex.
- They observed motor neurone degeneration in the model.
American English
- The motor neuron circuitry was mapped.
- She specialized in motor neuron physiology.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in neuroscience, biology, medicine, and physiology modules.
Everyday
Rare, except in discussions of diseases like ALS (Motor Neuron Disease).
Technical
Fundamental term in neurology, neuroanatomy, and related clinical fields.
Vocabulary
Synonyms of “motor neuron”
Strong
Neutral
Weak
Vocabulary
Antonyms of “motor neuron”
Watch out
Common Mistakes When Using “motor neuron”
- Misspelling as 'motor neurone' in AmE contexts.
- Confusing 'motor neuron' with 'sensory neuron'.
- Using it as a countable noun without a clear referent (e.g., 'He has motor neuron' instead of 'He has motor neuron disease').
FAQ
Frequently Asked Questions
It is a compound noun written as two words. The hyphenated form 'motor-neuron' is less common but occasionally seen in technical adjectives (e.g., motor-neuron pool).
A motor neuron is a single nerve cell. A motor nerve is a bundle of many motor neuron axons (fibers) wrapped in connective tissue, traveling together to a target.
Motor Neuron Disease. This is a group of neurodegenerative disorders (like ALS) where motor neurons progressively die, leading to muscle weakness and paralysis.
Yes. Major types include: Upper Motor Neurons (in the brain's motor cortex), Lower Motor Neurons (in the brainstem and spinal cord), and subtypes like alpha motor neurons (for muscle force) and gamma motor neurons (for muscle spindle tone).
A specialized nerve cell that transmits signals from the brain or spinal cord to a muscle or gland, causing it to contract or secrete.
Motor neuron is usually technical, medical, scientific, academic in register.
Motor neuron: in British English it is pronounced /ˈməʊtə ˌnjʊərɒn/, and in American English it is pronounced /ˈmoʊt̬ɚ ˌnʊrɑːn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “The final common pathway (metaphor for the role of motor neurons in movement)”
Learning
Memory Aids
Mnemonic
Think: MOTOR = movement. A MOTOR neuron makes your muscles MOVE. It's the 'driver' neuron that makes things happen.
Conceptual Metaphor
A MOTOR NEURON IS A FINAL MESSENGER / A MOTOR NEURON IS A WIRE TO A MUSCLE.
Practice
Quiz
What is the primary function of a motor neuron?