Mr. G Muscle Actions and Muscles

Another name for the prime mover is

• Agonist

• Protagonist

• Antagonist

• Flexion

What is the role of the biceps brachii in elbow flexion?

• Prime Mover

• Stabilizer

• Antagonist

• Synergist

Which of the following muscle groups acts as an antagonist to the hamstring during hip flexion, knee flexion, and ankle dorsiflexion?

• Pectoralis major

• Hamstrings

• Quadriceps

• Biceps Brachii

Which muscle is primarily responsible for the abduction of the shoulder?

• Deltoid

• Latissimus Dorsi

• Trapezius

• Pectoralis Major

What joint action does the trapezius 3 create?

• Elbow Flexion

• Shoulder Adduction

• Spinal Extension

• Shoulder girdle Retraction

During a jump squat, which muscles act as the primary extensor of the ankle during takeoff?

• Anterior Deltoid and Posterior Deltoid

• Gastrocneumeus and Soleus

• Gluteus Maximus and Gluteus Medius

• Rectus Femoris and Biceps Femoris

The muscle that opposes a action is called a(n) __________.

• antagonist

• synergist

• prime mover

• fixator

Holding barbells out in a sustained motion would be what muscle action?

• Isometric contraction
• Isoinertial contraction
• Eccentric contraction
• Concentric contraction

When a muscle is under tension, it is not possible for it to be lengthening

• True
• False

If you push against an immovable object, you are creating this type of muscle action..

• Isometric
• Isotonic
• Concenetric
• Eccentric