Question

multiple choice question the quadriceps extend the leg and the hamstrings flex the leg. these two muscle groups are ___ antagonists agonists synergists

Explanation:

Antagonist muscle pairs have opposite actions. The quadriceps extend the leg while the hamstrings flex it, which is characteristic of antagonist muscles. Agonist muscles are the main - acting muscles for a movement, and synergists assist the agonists.

Answer:

A. antagonists