Question

When Janvi dances, her hands and legs are moved by a pair of antagonistic muscles.
How do antagonistic muscle pairs work?
a. both muscles contract at the same time
b.one muscle contracts and the other relax
c.both muscles relax at the same timed
d.one muscle is strong and the other weak

Answer 1

Answer:

One muscle contracts and the other relaxes

Explanation:

Answer 2

b. one muscle contracts and the other relax is the correct answer.

• Muscles provide force to bones. Antagonistic muscles are the pair of muscles that act in opposing action to each other.
• When one muscles contracts, the another muscle from pair relaxes.
• Agonist is the muscle that contracts while antagonist is the muscle that relaxes.
• Example of antagonist muscle is - muscles of biceps and triceps present in hand.