Quiz

Question set 3 of 3

Immediately following section of the dorsal and ventral roots supplying a muscle, an increase in the frequency of discharge of a spindle primary afferent fibre from that muscle will be produced by:

passive stretching of the muscle.

a)
b)
Correct! "This will stretch the spindles in it and hence their primary afferents."Incorrect. "This will stretch the spindles in it and hence their primary afferents."
Check your answer

stimulation of the alpha motoneurones to the muscle distal to the section.

a)
b)

Correct! "The extrafusal fibres will contract, shortening the muscle and unloading the spindle."

Incorrect. "The extrafusal fibres will contract, shortening the muscle and unloading the spindle."
Check your answer

End of quiz and learning module