Muscle Physiology 2

Ii afferents intrafusal fibers connective tissue

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Unformatted text preview: lls of the muscle Responsible for skeletal muscle contraction Innervated by alpha motor neurons Intrafusal fibers: Primary sensory Contractile cells of the muscle spindle Adjust sensitivity of muscle to stretch Innervated by gamma motor units Muscle Spindle: type 1a and type II afferents INtrafusal fibers, connective tissue, sensory nerve ends Detect changes in muscle length Sensory endings: annulospiral, flower- spray Sensitivity adjusted by action of intrafusal fibers Golgi tendon Organ: type Ib...
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