Question 1

Which connective tissue covering surrounds individual muscle fibers within a fascicle?

Accepted Answer

Endomysium

Question 2

A muscle that acts as the primary force for a specific movement is called the:

Accepted Answer

Prime mover (Agonist)

Question 3

Which type of muscle fiber arrangement allows for the greatest range of motion but the least tension?

Accepted Answer

Parallel

Question 4

During muscle contraction, which structure shortens as actin and myosin filaments slide past each other?

Accepted Answer

Sarcomere

Question 5

Which muscle is responsible for elevating the mandible during chewing?

Accepted Answer

Masseter

Question 6

If a muscle contracts but does not change length, what type of contraction is occurring?

Accepted Answer

Isometric

Question 7

Which of the following best describes the origin of a muscle?

Accepted Answer

The end attached to an immovable or fixed part

Question 8

What is the main source of energy for muscle contraction?

Accepted Answer

ATP

Question 9

Which muscle arrangement develops the most tension for a given cross-sectional area?

Accepted Answer

Pennate

Question 10

Which muscle is responsible for abduction of the arm at the shoulder?

Accepted Answer

Deltoid

Question 11

Which of the following is a function of the buccinator muscle?

Accepted Answer

Compresses the cheek inward

Question 12

What is the role of the mitochondria in muscle cells?

Accepted Answer

Produce ATP via cellular respiration

Question 13

Which muscle type is responsible for voluntary movements of the skeleton?

Accepted Answer

Skeletal muscle

Question 14

Which muscle fiber arrangement is found in the orbicularis oris?

Accepted Answer

Circular

Question 15

If both a prime mover and its antagonist contract simultaneously, what is the result?

Accepted Answer

Rigid structure

Question 16

Which of the following best describes the action of the sternocleidomastoid muscle?

Accepted Answer

Flexes and rotates the head

Question 17

Which muscle is responsible for dorsiflexion and inversion of the foot?

Accepted Answer

Tibialis anterior

Question 18

Which equation best represents the relationship between muscle tension and cross-sectional area for parallel muscles?

Accepted Answer

$$T = k 	imes A$$

Question 19

Which muscle fiber arrangement allows muscle fibers to pull in different directions depending on stimulation?

Accepted Answer

Convergent

Question 20

Which of the following is true about isometric muscle contractions?

Accepted Answer

Tension increases but muscle length remains the same

Muscular System: Structure, Function, and Major Muscles

Study Guide - Practice Questions