Free CSCS: Structure & Function of Body System Questions and Answers

Question 1

Muscle fibers of type IIa are...

Accepted Answer

Red / White

Answer

Explanation:
White and red. Since Type I muscle fibers have a greater capacity for aerobic energy supply, they are "slow-twitch" and have a higher resilience to fatigue. Due to a more robust anaerobic energy source, type IIa muscle fibers are "fast-twitch," have a better capability for generating force quickly, and have lesser resistance to fatigue. Muscle fibers of Type IIx are "fast twitch," more capable of producing power quickly, and less resistant to exhaustion than Type IIa fibers.

Question 2

The ankle is a multiaxial joint, correct or incorrect.

Accepted Answer

FALSE

Answer

The statement is FALSE because the ankle (talocrural joint) is a uniaxial hinge joint, primarily allowing dorsiflexion and plantarflexion in one plane. A multiaxial joint, like the ball-and-socket hip, moves freely in all three planes, which the ankle does not.

Question 3

An electrocardiogram (ECG) measurement by the machine shows heart ventricular repolarization.

Accepted Answer

T-Wave

Answer

Explanation:
T-Wave. Ventricular repolarization is correlated with the T-Wave.

Question 4

True or False: Skeletal muscle is connected to myofilament, a fibrous connective tissue.

Accepted Answer

FALSE

Answer

Explanation:
The fibrous connective tissue layers that are involved with skeletal muscle are the epimysium, perimysium, and endomysium. Myofilaments (actin and myosin) are the contractile apparatus contained within myofibrils (which are contained within muscle fibers).

Question 5

If the blood's oxygen partial pressure is low and the alveoli's partial pressure of oxygen is high. As oxygen moves,

Accepted Answer

From the area of high partial pressure to the area of low partial pressure

Answer

Explanation:
From a high partial pressure region to a low partial pressure region. Moving from a high concentration area to a low concentration area, oxygen will follow the gradient in concentration.

Certified Strength and Conditioning Specialist Practice Test

Certified Strength and Conditioning Specialist Practice Test

Free CSCS: Structure & Function of Body System Questions and Answers