AFAA Anatomy and Physiology

Question 1

Which muscle is the primary mover during a squat exercise?

Accepted Answer

Quadriceps

Answer

The quadriceps are the primary movers during the upward phase of a squat.

Question 2

What is the term for the joint movement that decreases the angle between two body segments?

Accepted Answer

Flexion

Answer

Flexion decreases the joint angle, such as bending the elbow or knee.

Question 3

Which energy system provides ATP for high-intensity exercise lasting 10–30 seconds?

Accepted Answer

Glycolytic system

Answer

The glycolytic (anaerobic glycolysis) system predominates for efforts lasting roughly 10–120 seconds.

Question 4

The rotator cuff is a group of four muscles that stabilize which joint?

Accepted Answer

Shoulder

Answer

The four rotator cuff muscles (SITS) stabilize and move the glenohumeral (shoulder) joint.

Question 5

Which plane of motion divides the body into front (anterior) and back (posterior) halves?

Accepted Answer

Frontal plane

Answer

The frontal (coronal) plane divides the body into anterior and posterior sections.

AFAA - Aerobics and Fitness Association of America Practice Test