Which ONE of the following statements concerning muscle spindles is CORRECT?

Question

Accepted Answer

The polar, striated portions of the intrafusal fibres are contractile.

Answer

They are arranged in series with the ordinary muscle fibres.

Answer

Impulses in the spiral sensory ending are set up by shortening of the ending leading to compression of the spirals.

Answer

They are most commonly located at the muscle-tendon junction.

Answer

Afferent volleys in 1A fibres inhibit the homonymous motoneurones.

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