katelynn73
12.02.2021 •
Biology
Help pls
When throwing a ball, why does the triceps muscle contract?
A. The contraction of the triceps muscle causes the arm to flex.
B. The contraction of the triceps muscle causes the arm to extend.
C. When added to the force of the biceps contracting, it provides extra force to the ball.
D. The triceps muscle needs to contract in order to keep the muscle from relaxing.
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Ответ:
I think it's A. The contraction of the triceps muscle causes the arm to flex.
Explanation:
The contraction of the triceps muscle causes the arm to flex. The contraction of the triceps muscle causes the arm to extend. When added to the force of the biceps contracting it provides the extra force to the ball.
Ответ: