NASM Personal Trainer Exam Questions & Answers 2026 (11–20)

Question 1

The quadriceps group is the prime mover for which action?

TheoryPractice · Accepted Answer

Knee extension. The quadriceps (four muscles on the front of the thigh) extend the knee; the rectus femoris also assists in hip flexion.

Question 2

The term 'anterior' refers to which surface of the body?

TheoryPractice · Accepted Answer

The front. Anterior (ventral) refers to the front of the body; posterior refers to the back.

Question 3

Flexion is best described as a movement that:

TheoryPractice · Accepted Answer

Decreases the angle between two bones. Flexion decreases the joint angle, such as bending the elbow to bring the forearm toward the upper arm.

Question 4

The primary muscle responsible for elbow flexion and forearm supination is the:

TheoryPractice · Accepted Answer

Biceps brachii. The biceps brachii is the prime mover for elbow flexion and also supinates the forearm.

Question 5

The triceps brachii is the prime mover for which action?

TheoryPractice · Accepted Answer

Elbow extension. The triceps brachii extends the elbow, opposing the biceps; it is the primary muscle worked in pushdowns and dips.

Question 6

The rectus abdominis is the prime mover for which action?

TheoryPractice · Accepted Answer

Spinal (trunk) flexion. The rectus abdominis flexes the spine, drawing the rib cage toward the pelvis, as in a crunch.

Question 7

The gluteus maximus is the prime mover for which action at the hip?

TheoryPractice · Accepted Answer

Hip extension. The gluteus maximus is the largest muscle in the body and the primary hip extensor, used heavily in squats, deadlifts, and sprinting.

Question 8

The central nervous system (CNS) consists of which structures?

TheoryPractice · Accepted Answer

The brain and spinal cord. The CNS comprises the brain and spinal cord; nerves outside these structures make up the peripheral nervous system.

Question 9

Which chamber of the heart pumps oxygenated blood out to the entire body?

TheoryPractice · Accepted Answer

Left ventricle. The left ventricle is the most muscular chamber and pumps oxygenated blood into the aorta for distribution throughout the body.

Question 10

Which structures are the tiny air sacs in the lungs where gas exchange occurs?

TheoryPractice · Accepted Answer

Alveoli. Alveoli are the microscopic air sacs where oxygen and carbon dioxide are exchanged between the lungs and the bloodstream.