BHK Bachelor of Kinesiology MCQ 5

Question 1

The Fick equation for oxygen consumption states that VO₂ equals:

Accepted Answer

Cardiac output × arteriovenous oxygen difference (a-vO₂ diff)

Answer

The Fick principle: VO₂ = Cardiac output (Q) × a-vO₂ difference, combining how much blood is pumped with how much oxygen is extracted per unit of blood.

Question 2

Which reflex arc inhibits excessive muscle tension by sensing force in the tendon?

Accepted Answer

Inverse myotatic reflex (Ib inhibition via GTO)

Answer

Golgi tendon organs (GTOs) detect high muscle tension and trigger Ib afferent inhibition of the muscle, protecting tendons and joints from excessive force.

Question 3

Which of the following best describes muscular endurance as a fitness component?

Accepted Answer

The ability of a muscle or muscle group to exert force repeatedly over time

Answer

Muscular endurance refers to a muscle's ability to sustain repeated contractions or maintain a contraction against resistance for an extended period.

Question 4

What is the mechanical advantage of a third-class lever, which is the most common lever type in the human body?

Accepted Answer

Mechanical advantage less than 1, favoring speed and range of motion over force

Answer

Third-class levers (effort between fulcrum and load) have a mechanical advantage <1, meaning more force is needed but speed and range of motion are amplified.

Question 5

During the eccentric phase of a squat, which muscle group is primarily responsible for controlling the descent?

Accepted Answer

Quadriceps and gluteus maximus

Answer

The quadriceps and gluteus maximus contract eccentrically (lengthening under load) to decelerate hip and knee flexion during the downward phase of the squat.

BHK - Bachelor of Kinesiology Practice Test

BHK - Bachelor of Kinesiology Practice Test

BHK Bachelor of Kinesiology MCQ 5