ACTION CPT STUDY GUIDE 2026 VERIFIED
QUESTION SET AND SOLUTIONS
◉ What is the skeletal system's two primary functions during
movement?
Answer: Support and leverage
◉ What is a joint?
Answer: a place where one bone articulates with another.
◉ What is the most common type of joint?
Answer: synovial (80% of joints are of this type; they have a large
capacity for motion)
◉ What are the 3 types of joint motion?
Answer: roll - tibial condyles and femoral condyles
slide- same as above but the sliding portion of the movement
spin - rotation of the forearm
◉ What is the best exercise for increasing nutrition to joints?
Answer: stretching
, ◉ The ability to experience full comfortable ROM (range of motion)
in a joint is called . . .
Answer: flexibility
◉ What are the three types of muscle?
Answer: 1. cardiac - heart; involuntary
2. smooth - most hollow organs; involuntary
3. skeletal - attached to skeleton; used for voluntary movement
◉ What is the basic contractile unity of the myofibril?
Answer: sarcomere
◉ Sarcomeres are composed of alternating protein strands of what
two proteins?
Answer: Actin (thin) filaments); myosin (large filaments)
◉ Sliding filament theory
Answer:
◉ What is the job of ATP in the sliding filament theory?
Answer: To link the cross bridge among myosin heads and actin
filaments. They to twist (ratchet) the head of the myosin causing the
sarcomere to shorten and the Z lines to come closer.
QUESTION SET AND SOLUTIONS
◉ What is the skeletal system's two primary functions during
movement?
Answer: Support and leverage
◉ What is a joint?
Answer: a place where one bone articulates with another.
◉ What is the most common type of joint?
Answer: synovial (80% of joints are of this type; they have a large
capacity for motion)
◉ What are the 3 types of joint motion?
Answer: roll - tibial condyles and femoral condyles
slide- same as above but the sliding portion of the movement
spin - rotation of the forearm
◉ What is the best exercise for increasing nutrition to joints?
Answer: stretching
, ◉ The ability to experience full comfortable ROM (range of motion)
in a joint is called . . .
Answer: flexibility
◉ What are the three types of muscle?
Answer: 1. cardiac - heart; involuntary
2. smooth - most hollow organs; involuntary
3. skeletal - attached to skeleton; used for voluntary movement
◉ What is the basic contractile unity of the myofibril?
Answer: sarcomere
◉ Sarcomeres are composed of alternating protein strands of what
two proteins?
Answer: Actin (thin) filaments); myosin (large filaments)
◉ Sliding filament theory
Answer:
◉ What is the job of ATP in the sliding filament theory?
Answer: To link the cross bridge among myosin heads and actin
filaments. They to twist (ratchet) the head of the myosin causing the
sarcomere to shorten and the Z lines to come closer.
