What is the role of a muscle spindle, and how is a muscle spindle innervated?


The role of a muscle spindle (named due to its spindle shape) is to supply information to the neuromuscular system about muscle length. It also provides feedback concerning motion and position. Muscle spindles are innervated by afferent and efferent systems. The afferent component communicates the sense of muscle change to the central nervous system (CNS). The efferent component sends nerve impulses that result in contraction of the intrafusal fibers. Intrafusal fibers are attached to muscles and can sense changes in the length of a muscle.

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What type of roof is used to prevent ice damming?

A. Rain roof B. Cold roof C. Green roof D. Photovoltaic (Solar) roof

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What will be an ideal response?

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Cells that form bone are called ________. 

Fill in the blank(s) with the appropriate word(s).

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