Muscle Spindles and Reflexes

To detect changes in muscle length (correct)

To cause muscle contraction

To detect changes in muscle tension

To maintain muscle strength

The number of muscle fibers

The velocity of length change (correct)

The tension in the muscle

The length of the muscle fiber

To innervate extrafusal fibers in the homonymous muscle (correct)

To detect changes in muscle length

To maintain muscle spindle sensitivity during contraction

To stimulate group Ia afferent fibers