Skeletal muscles
A)are found in and about internal organs.
B)work in antagonistic pairs.
C)never get longer when they contract.
D)contain calcium throughout the cell.
E)have the same origin and insertion point.

Question

Quizplus · Accepted Answer

Skeletal muscles work in antagonistic pairs, meaning that one muscle contracts (the agonist) while the other muscle relaxes (the antagonist). This is necessary for coordinated movement and joint stability. The other options are incorrect: A) Smooth muscles are found in and about internal organs, not skeletal muscles. C) Skeletal muscles can get longer when they contract if the muscle is eccentrically contracting (lengthening while still under tension). D) Skeletal muscles only contain calcium in specialized structures called sarcoplasmic reticula, not throughout the cell. E) Skeletal muscles have different origin and insertion points, which is necessary for movement to occur when the muscle contracts.

Skeletal Muscles