Which of the following groups of muscles has the most muscle spindles? A. Muscle

Question

Which of the following groups of muscles has the most muscle spindles? A. Muscles of the hand B. Muscles of the back C. Muscles of the thigh D. Muscles of the middle-ear E. Muscles of the torso A nurse pricks your finger to type your blood. You flinch at the pain, pulling your hand back. This is called the _____ reflex. A. painful B. stretch C. flexor (withdrawal) D. tendon E. crossed extension The sensitivity of the muscle spindle is maintained by _____. A. a stretch reflex B. alpha motor neurons C. gamma motor neurons D. anulospiral endings E. secondary afferent (group II) fibers

Explanation / Answer

Muscle spindle are receptors present inside the muscle which detect the changes in mucsle length intially.

25.Answer is B.

Most of muscle spindle present in muscles of back because more delicate is movement more is muscle spindle.

26.Answer is C

It protect the body from damaging stimuli.

27.Answer is C.

Muscle spindle senstivity is mintained by Gamma motor neuron.

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