ACTION CPT ACTUAL EXAM SCRIPT
TESTED QUESTIONS ACCURATE ANSWERS
GRADED A PLUS REVIEW SHEET
⩥ What is the difference between origin and insertion of a muscle?.
Answer: Origin = the fixed/proximal attachment point. Insertion = the
movable/distal attachment that moves toward the origin during
contraction
⩥ What are the three types of muscle tissue?.
Answer: Skeletal (voluntary, striated), smooth (involuntary, walls of
organs), cardiac (involuntary, heart)
⩥ What is a motor unit?.
Answer: A single motor neuron and all the muscle fibers it innervates.
Larger motor units = more force; smaller = more precision
⩥ What is the sliding filament theory?.
Answer: Muscle contraction occurs when actin and myosin filaments
slide past each other — myosin heads attach to actin and pull it inward,
shortening the sarcomere
⩥ What is hypertrophy?.
, Answer: An increase in the size of individual muscle fibers due to
increased protein synthesis — not an increase in fiber number
⩥ What are the four chambers of the heart?.
Answer: Right atrium, right ventricle, left atrium, left ventricle. Right
side pumps deoxygenated blood to lungs; left pumps oxygenated blood
to the body
⩥ What is stroke volume?.
Answer: The amount of blood pumped out of the left ventricle with each
heartbeat. Increases with aerobic training
⩥ What is the difference between type I and type II muscle fibers?.
Answer: Type I = slow-twitch, fatigue-resistant, aerobic, endurance.
Type II = fast-twitch, fatigue quickly, anaerobic, power and strength
⩥ Name the major muscles of the posterior chain..
Answer: Erector spinae, glutes, hamstrings, and calves
⩥ What is the role of the core musculature?.
Answer: Stabilize the spine and pelvis, transfer force between upper and
lower body, maintain posture, and protect the lumbar spine
⩥ What is the difference between lordosis, kyphosis, and scoliosis?.
TESTED QUESTIONS ACCURATE ANSWERS
GRADED A PLUS REVIEW SHEET
⩥ What is the difference between origin and insertion of a muscle?.
Answer: Origin = the fixed/proximal attachment point. Insertion = the
movable/distal attachment that moves toward the origin during
contraction
⩥ What are the three types of muscle tissue?.
Answer: Skeletal (voluntary, striated), smooth (involuntary, walls of
organs), cardiac (involuntary, heart)
⩥ What is a motor unit?.
Answer: A single motor neuron and all the muscle fibers it innervates.
Larger motor units = more force; smaller = more precision
⩥ What is the sliding filament theory?.
Answer: Muscle contraction occurs when actin and myosin filaments
slide past each other — myosin heads attach to actin and pull it inward,
shortening the sarcomere
⩥ What is hypertrophy?.
, Answer: An increase in the size of individual muscle fibers due to
increased protein synthesis — not an increase in fiber number
⩥ What are the four chambers of the heart?.
Answer: Right atrium, right ventricle, left atrium, left ventricle. Right
side pumps deoxygenated blood to lungs; left pumps oxygenated blood
to the body
⩥ What is stroke volume?.
Answer: The amount of blood pumped out of the left ventricle with each
heartbeat. Increases with aerobic training
⩥ What is the difference between type I and type II muscle fibers?.
Answer: Type I = slow-twitch, fatigue-resistant, aerobic, endurance.
Type II = fast-twitch, fatigue quickly, anaerobic, power and strength
⩥ Name the major muscles of the posterior chain..
Answer: Erector spinae, glutes, hamstrings, and calves
⩥ What is the role of the core musculature?.
Answer: Stabilize the spine and pelvis, transfer force between upper and
lower body, maintain posture, and protect the lumbar spine
⩥ What is the difference between lordosis, kyphosis, and scoliosis?.
