Question

groups of skeletal muscles that contract simultaneously to move a body part are said to be
agonists.
antagonists.
synergistic.
prime movers.

Explanation:

To solve this, we analyze the definitions:

• Agonists (prime movers): Main muscles causing a movement, but the term for groups acting together isn’t just "agonists" in this context.
• Antagonists: Muscles that oppose the action of agonists, not acting together to move a part.
• Synergistic: Muscles that work together (contract simultaneously) to produce a movement or stabilize a joint, matching the description.
• "Prime movers" is similar to agonists, focusing on the main muscle, not the cooperative group.

Answer:

C. synergistic