Question 1

Which connective tissue layer directly surrounds individual skeletal muscle fibers?

Accepted Answer

Endomysium

Question 2

A muscle that is broad at one end and tapers to a single tendon is classified as which fascicle pattern?

Accepted Answer

Convergent

Question 3

Which muscle type is responsible for closing or constricting openings in the body, such as the eye?

Accepted Answer

Circular (Sphincter)

Question 4

A muscle strain is most likely to occur when:

Accepted Answer

A muscle is exposed to more stretching or contractile force than it can handle

Question 5

Which of the following is NOT a component of a lever system in the human body?

Accepted Answer

Epimysium

Question 6

In a third-class lever system, such as the elbow joint, where is the force applied relative to the load and fulcrum?

Accepted Answer

Force is applied in the middle, load at one end, fulcrum at the other end

Question 7

Which muscle is an example of a multipennate muscle?

Accepted Answer

Deltoid

Question 8

What is the primary function of skeletal muscle contraction?

Accepted Answer

To generate muscle tension

Question 9

Which muscle group acts to oppose and slow the action of the agonist during movement?

Accepted Answer

Antagonists

Question 10

A muscle named 'Flexor digitorum profundus' is likely to:

Accepted Answer

Flex the fingers deeply

Question 11

Which treatment is NOT part of the PRICE method for muscle strains?

Accepted Answer

Surgery

Question 12

If a muscle attaches to two bones and one bone moves while the other remains stationary, the stationary attachment is called the:

Accepted Answer

Origin

Question 13

Which of the following muscle shapes is described as thicker in the belly and tapered at the ends?

Accepted Answer

Fusiform

Question 14

A muscle knot, or myofascial trigger point, is best described as:

Accepted Answer

A discrete place within the fascia that is overly irritable or inflamed

Question 15

Which lever system in the body is most common and is exemplified by the elbow joint?

Accepted Answer

Third-class lever

Question 16

Which muscle fiber orientation is described as fascicles feathering out from only one side of a tendon?

Accepted Answer

Unipennate

Question 17

A muscle named 'pectoralis major' is named for its:

Accepted Answer

Location and size

Question 18

Which of the following equations best represents mechanical advantage in a lever system?

Accepted Answer

$$MA = \frac{Length_{effort~arm}}{Length_{load~arm}}$$

Question 19

Which muscle group helps guide the movement and ensure it is smooth, working together with the agonist?

Accepted Answer

Synergists

Question 20

During shivering, skeletal muscles generate heat as a waste product of converting chemical energy of ATP to mechanical energy. Which process is primarily responsible for this heat production?

Accepted Answer

Muscle tension

Chapter 9: The Muscular System – Structure, Function, and Classification of Skeletal Muscles

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