Personal Trainer Practice Questions

Question 1

What are the three types of muscle tissue?

Accepted Answer

Cardiac, smooth, skeletal

Answer

Cardiac, smooth, rough

Answer

Smooth, rough, skeletal

Answer

Cardiac, type I, type II

Question 2

Which of the following facts is not true about skeletal muscles?

Accepted Answer

They can be stretched to up to 250% of their resting length.

Answer

They account for 36-45% of total body weight.

Answer

Skeletal muscle is the most plentiful tissue type in the body.

Answer

They usually operate together with other muscles in functional groups.

Question 3

Which of the three types of muscle action has a constant speed of shortening and lengthening?

Accepted Answer

Isometric

Answer

Concentric

Answer

Eccentric

Answer

Antagonistic

Question 4

What is the correct order of structures of a muscle from smallest to largest?

Accepted Answer

Muscle fiber, endomysium, fascicles, perimysium, epimysium

Answer

Muscle fiber, epimysium, fascicles, perimysium, endomysium

Answer

Muscle fiber, endomysium, perimysium, fascicles, epimysium

Answer

Muscle fiber, epimysium, endomysium, fascicles, perimysium

Question 5

Which muscular structure surrounds the actual muscle fiber and is responsible for depolarization of the surface of the fiber and protection and insulation of the fiber from others around it?

Accepted Answer

Sarcolemma

Answer

Satellite cells

Answer

Sarcoplasm

Answer

Fascia

Question 6

What part within the muscle fiber stores glycogen and myoglobin and is made up of lipids, enzymes and various types of cellular organelles?

Accepted Answer

Sarcoplasm

Answer

Sarcolemma

Answer

Transverse tubules

Answer

Myofibrils

Question 7

Within the myofibril, which of the following is the lighter band that contains only actin?

Accepted Answer

I band

Answer

H zone

Answer

M line

Answer

A band

Question 8

Which of the following correctly describes what happens within the muscle fiber during contraction?

Accepted Answer

Myosin cross-bridges bind, actin slides over myosin, Z lines are pulled together

Answer

Z lines are pulled together, myosin slides over actin, myosin cross-bridges bind

Answer

Myofilaments shorten in length, sarcomere lengthens, Z lines are pulled together

Answer

Myosin filaments shorten, actin slides over myosin, A band shortens

Question 9

What is the function of calcium in the muscle stimulation process?

Accepted Answer

Binds with troponin to open up binding sites

Answer

Provides the action potential

Answer

Binds to actin filaments’ binding sites

Answer

Conducts the electrical impulse along the myofibril

Question 10

Which of the following does not correctly describe fast-twitch muscles fibers?

Accepted Answer

They are used during aerobic exercises.

Answer

They have a quick rate of calcium ion releases

Answer

They use blood glucose and muscle glycogen for energy.

Answer

They generate fast, powerful muscle actions.