For the exercise below, the elbow extendors are the agonists while the elbow flexors are the antagonist.

A B

Question

For the exercise below, the elbow extendors are the agonists while the elbow flexors are the antagonist.

A               B

BlackTom AI · Accepted Answer

In this exercise, we are identifying which muscle groups act as agonists and antagonists for the elbow movement shown.
Option A: elbow extendors
- This choice reflects the idea that when the elbow is being extended, the primary muscle group responsible for the movement is the elbow extensors (primarily the triceps brachii). Since extendors generate the action of straightening the elbow, labeling them as the agonists for the movement in panel A is appropriate.
Option B: elbow flexors
- Here, the elbow flexors would be the muscles that bend the elbow, such as the biceps brachii and brachialis. If the movement being performed in the scenario is elbow extension, then the elbow flexors are not the prime movers; instead, they act as antagonists that oppose the extension. Describing them as antagonists fits the typical flexion versus extension dynamic.

To summarize the rationale for each option in isolation:
- Elbow extendors as the agonist correctly identifies the muscle group responsible for the primary action (extension) in the depicted movement.
- Elbow flexors as the antagonist correctly identifies the opposing muscle group that resists or counteracts the primary action of extension.

For the exercise below, the elbow extendors are the agonists while the elbow flexors are the antagonist. A B多重下拉选择题

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