The Muscular System

What is muscular hypertrophy?

• a) Decrease in muscle size due to exercise.

• b) Rapid increase in muscle size after short-term exercise.

• c) Increase in muscle size due to a prolonged exercise program.

• d) Maintenance of muscle size regardless of exercise intensity.

What is muscular atrophy?

• a) Increase in muscle size due to regular exercise.

• b) Maintenance of muscle size without regular exercise.

• c) Decrease in muscle size from excessive exercise.

• d) When a muscle decreases in size from not being exercised regularly.

Which of the following is NOT a basic function of muscles?

• a) To create movement when muscles pull on bones.

• b) To maintain good posture.

• c) To maintain bodily functions.

• d) To store excess energy in the body.

Which type of muscle is under our conscious control and enables movement?

• a) Cardiac muscle

• b) Smooth muscle

• c) Skeletal or voluntary muscles

• d) Involuntary muscles

Where is cardiac muscle primarily found?

• a) In the lungs

• b) In the brain

• c) In the heart

• d) In the intestine

Where are smooth or involuntary muscles primarily found?

• a) In the internal organs such as the intestine

• b) In the cardiac muscle

• c) In the skeletal system

• d) In the skin

What is the term for the contracting muscle in a pair?

• a) Agonist

• b) Antagonist

• c) Prime mover

• d) Relaxed muscle

What is the term for the relaxing muscle in a pair?

• a) Agonist

• b) Antagonist

• c) Prime mover

• d) Contracting muscle

1. Which type of muscle fiber is primarily used for power, strength, and speed activities? There are two correct answers.

• a) Slow twitch - red
  

• b) Fast twitch - white
  

• c) Type 1
  

• d) Type IIa / IIb

What type of muscular contraction occurs when the muscle generates tension without changing length?

• a) Concentric contraction

• b) Eccentric contraction

• c) Isometric contraction

• d) Isotonic contraction