Question

multiple choice question

the biceps brachii helps the brachialis flex the elbow. which term best describes the role of the biceps brachii during elbow flexion?

fixator
antagonist
extensor
synergist

Explanation:

Identify the prime mover and action

Using the Prime Mover and Muscle Functional Groups knowledge points

• The question states that the brachialis is the main muscle performing elbow flexion (the prime mover or agonist).
• The biceps brachii assists the brachialis in this movement.

Determine the role of the assisting muscle

Using the Biceps Brachii Function and Muscle Functional Groups knowledge points

• A muscle that aids the prime mover to produce a more effective movement is classified as a synergist.
• Therefore, the biceps brachii acts as a synergist during elbow flexion.

Answer:

• Fixator
• Antagonist
• Extensor
• Synergist (Correct answer)