Question

when you bend your arm at the elbow, which muscle acts as the agonist and which acts as the antagonist?

• 1 point

a) biceps = antagonist, triceps = agonist
b) biceps = agonist, triceps = antagonist
c) biceps = ligament, triceps = tendon
d) biceps = extensor, triceps = flexor
what happened during the chicken wing lab when you or mr. rigg pulled on * 1 point
the muscle of the chicken wing?
what muscle(s) was it?
what helped create the movement?
think about what attached to the muscle.
your answer

Explanation:

• First question:
• An agonist muscle is the one that contracts to cause a movement. When bending the arm at the elbow (flexion), the biceps brachii contracts. The triceps brachii (antagonist) relaxes during this flexion.
• Second question:
• When pulling on the muscle (biceps - like in the chicken wing lab), the muscle shortens (contracts). Tendons (which attach muscle to bone) transfer the force of muscle contraction to the bone, creating movement.

Answer:

• First question: B. Biceps = Agonist, Triceps = Antagonist
• Second question: When pulling on the muscle (biceps) of the chicken wing, the muscle contracted. Tendons (attached to the muscle) helped create the movement by transmitting the force of muscle contraction to the bone.