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What type of muscles alternate between contracting and relaxing? a) Involuntary muscles b) Antagonistic muscles c) Agonist muscles d) Isotonic muscles
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What type of muscles alternate between contracting and relaxing? a) Involuntary muscles b) Antagonistic muscles c) Agonist muscles d) Isotonic muscles

User Scrhartley
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6 votes

Answer:

b

Step-by-step explanation:

User Rkingon
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