The figure below shows the change that occurs in two muscles when the arm goes from a bent to a straight position.
For this to occur,
A)the triceps contract and the biceps relax.
B)the biceps contract and the triceps relax.
C)both the biceps and the triceps contract.
D)both the biceps and the triceps relax.

Question

The figure below shows the change that occurs in two muscles when the arm goes from a bent to a straight position. 
For this to occur,
A)the triceps contract and the biceps relax. 
B)the biceps contract and the triceps relax. 
C)both the biceps and the triceps contract. 
D)both the biceps and the triceps relax.

Quizplus · Accepted Answer

The Answer of The figure below shows the change that occurs in two muscles when the arm goes from a bent to a straight position. 
For this to occur,
A)the triceps contract and the biceps relax. 
B)the biceps contract and the triceps relax. 
C)both the biceps and the triceps contract. 
D)both the biceps and the triceps relax.

The Figure Below Shows the Change That Occurs in Two