A motor neuron and all the muscle fibers it supplies are called a(n):
Correct answer: A. Motor unit
- A. Motor unit
- B. Neuromuscular junction
- C. Neural unit
- D. Microtubules
Explanation
A motor neuron and all of the skeletal muscle cells it stimulates is called a motor unit. The axon of each motor neuron has numerous endings called axonal terminals. The actual gap between axonal endings and the muscle cell is called neuromuscular junctions.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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