Motor Unit Anatomy
A motor unit is made up of a motor neuron and the skeletal muscle fibers innervated by that motor neurons axonal terminals. Alternatively a motor unit is a group of muscle fibers innervated by a single motor neuron.
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Motor unit anatomy. A group of muscle fibres that respond to a stimulus from a single motor neuron. A motor unit is composed of a motor neuron and all of the muscle fibers ie muscle cells it innervates. It produces a finer degree of neural control over contraction than a larger unit which produces more powerful gross movements when activated.
What is a motor unit. All of the motor units within a muscle are considered a motor pool. Good questionthis question is almost guaranteed to appear on your level 3 anatomy and physiology exam.
The physiological and anatomical properties of mammalian motor units are discussed and the results of human and animal studies are compared. English aw wolf sl. Motor neurons that are part of a motor unit have elongated axons that run through the spinal cord.
A motor unit is a motor neuron and all of the. A motor unit consists of one alpha motor neuron together with all the muscle fibers it stimulates. A physiological organization of motor units based on the mechanical properties of their associated muscle units is examined.
Learn vocabulary terms and more with flashcards games and other study tools. In the extraocular muscles a motor unit consists of less than a dozen small fibres that is considered to be a small unit. The concept was proposed by charles scott sherrington.
Groups of motor units often work together to coordinate the contractions of a single muscle.
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