Muscles Occur in Antagonistic Pairs Because

question 41

Multiple Choice

Muscles occur in antagonistic pairs because:

• A) they are incapable of working agonistically.
• B) actin and myosin filaments can only move in one direction.
• C) both contraction and extension would cause an oxygen debt.
• D) contraction is voluntary, while relaxation is involuntary.
• E) they are only capable of contracting and not pushing.

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