AFAA Anatomy and Physiology 3

Question 1

What does the term 'agonist' refer to in muscle action?

Accepted Answer

The muscle primarily responsible for a movement

Answer

A muscle that opposes the prime mover

Answer

A muscle that stabilizes the joint

Answer

A muscle that assists the prime mover

Question 2

Which type of contraction occurs when a muscle produces force while lengthening?

Accepted Answer

Eccentric

Answer

Concentric

Answer

Isometric

Answer

Isokinetic

Question 3

The cardiovascular response known as 'cardiac output' is calculated as:

Accepted Answer

Heart rate × stroke volume

Answer

Blood pressure × heart rate

Answer

Stroke volume ÷ heart rate

Answer

VO2 max × body weight

Question 4

Which bone forms the heel of the foot?

Accepted Answer

Calcaneus

Answer

Talus

Answer

Navicular

Answer

Cuboid

Question 5

Which neuromuscular receptor detects changes in muscle length and triggers the stretch reflex?

Accepted Answer

Muscle spindle

Answer

Golgi tendon organ

Answer

Pacinian corpuscle

Answer

Meissner's corpuscle

Question 6

What does VO2 max measure?

Accepted Answer

Maximum rate of oxygen consumption during exercise

Answer

Maximum anaerobic power output

Answer

Maximum lung capacity at rest

Answer

Maximum heart rate during exercise