Multiple choice

Most skeletal muscles work in ___________ pairs.

  1. Sympathetic

  2. Antagonistic

  3. Identical

  4. Something else

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Most skeletal muscles work in antagonistic pairs, meaning that as one muscle contracts to move a joint, the other relaxes. For example, the biceps and triceps work antagonistically to bend and straighten the elbow.