Free NASM Exercise Science & Human Anatomy Questions and Answers

Question 1

Which muscle is primarily responsible for shoulder abduction?

Accepted Answer

Deltoid

Answer

The deltoid muscle is the primary muscle forming the rounded contour of the shoulder. Its middle head is particularly effective at initiating and performing shoulder abduction, which is the movement of the arm away from the body's midline. The other muscles listed have different primary functions.

Question 2

What is the functional unit of the kidney?

Accepted Answer

Nephron

Answer

The nephron is the microscopic structural and functional unit of the kidney. It is responsible for filtering blood, reabsorbing essential substances, and excreting waste products to form urine. Each kidney contains millions of nephrons, which are crucial for maintaining fluid and electrolyte balance.

Question 3

Which structure connects muscle to bone?

Accepted Answer

Tendon

Answer

Tendons are strong, fibrous connective tissues that serve as the crucial link between muscles and bones. They transmit the force generated by muscle contractions to the bones, enabling movement. Ligaments, in contrast, connect bone to bone, while fascia surrounds muscles and organs.

Question 4

What type of joint is the elbow?

Accepted Answer

Hinge

Answer

The elbow joint is classified as a hinge joint, allowing for movement primarily in one plane, similar to a door hinge. This type of joint permits flexion (bending) and extension (straightening) of the forearm relative to the upper arm. Other joint types allow for different ranges and planes of motion.

Question 5

Which muscle fiber type is most fatigue-resistant?

Accepted Answer

Type I

Answer

Type I muscle fibers, also known as slow-twitch oxidative fibers, are highly fatigue-resistant due to their abundant mitochondria, high capillary density, and reliance on aerobic metabolism. They are ideal for sustained, low-intensity activities like long-distance running or maintaining posture, unlike the faster, more fatigable Type II fibers.

NASM - Certified National Academy of Sports Medicine Specialist Practice Test

NASM - Certified National Academy of Sports Medicine Specialist Practice Test

Free NASM Exercise Science & Human Anatomy Questions and Answers