In response to a muscle being stretched, a muscle spindle initiates a somatic spinal reflex that causes
1
contraction of the agonist muscle.
2. relaxation of the antagonist muscle.
3. contraction of the antagonist muscle.
4. relaxation of the agonist muscle.
a) 1 only
b) 2 only
c) 3 only
d) 4 only
e) 1 and 2
e
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