Muscle Contraction Quiz

What is the muscle that shortens to move a joint called?

• Synergist

• Agonist

• Antagonist

• Fixator

Which muscle relaxes in opposition to the agonist?

• Agonist

• Antagonist

• Synergist

• Fixator

What type of contraction occurs when a muscle neither shortens nor lengthens?

• Isotonic contraction

• Isometric contraction

• Isokinetic contraction

• Eccentric contraction

Which type of contraction can only be achieved on specialist hydraulic machines?

• Isokinetic contraction

• Isometric contraction

• Eccentric contraction

• Isotonic contraction

What type of contraction occurs when the muscle shortens with constant velocity over the range of movement?

• Isotonic contraction

• Eccentric contraction

• Isokinetic contraction

• Isometric contraction

Which type of contraction is important to promote gains in muscle strength and size?

• Eccentric contraction

• Isokinetic contraction

• Isometric contraction

• Isotonic contraction

What are muscles that work together to enable the agonists to operate more efficiently called?

• Fixator

• Synergist

• Antagonist

• Agonist

What do fixator muscles do?

• Control and direct movement

• Stabilize the origin

• Enable movement

• Stop unwanted movement

In which type of contraction does the muscle length increase?

• Isotonic contraction

• Isometric contraction

• Eccentric contraction

• Isokinetic contraction

What type of contraction occurs when the muscle shortens with varying velocity over the range of movement?

• Isometric contraction

• Isokinetic contraction

• Concentric contraction

• Eccentric contraction