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 uniformly tapers to a single tendon at the other is best described as which type of muscle shape?

Accepted Answer

Convergent

Question 3

Which of the following best describes the function of an antagonist muscle during movement?

Accepted Answer

It opposes the action of the agonist, slowing or stopping movement.

Question 4

The biceps brachii attaches to the scapula and the radius. When flexing the forearm, which is the origin and which is the insertion?

Accepted Answer

Scapula is the origin; radius is the insertion.

Question 5

Which lever system is most common in the human body and is exemplified by the action of the biceps brachii at the elbow joint?

Accepted Answer

Third-class lever

Question 6

A muscle named 'Flexor Digitorum Profundus' is likely to have which of the following characteristics?

Accepted Answer

It is a deep muscle that flexes the fingers.

Question 7

Which of the following best explains why shivering increases body temperature?

Accepted Answer

Shivering causes chemical energy from ATP to be converted to mechanical energy, producing heat as a byproduct.

Question 8

Which muscle shape is characterized by fascicles that attach obliquely to a tendon, resembling a feather, and can be unipennate, bipennate, or multipennate?

Accepted Answer

Pennate

Question 9

A patient is unable to close their eyelids tightly and has difficulty blinking. Which muscle is most likely affected?

Accepted Answer

Orbicularis oculi

Question 10

If a muscle is named 'adductor longus,' what can you infer about its function and relative size?

Accepted Answer

It adducts and is long.

Question 11

Which of the following is an example of a first-class lever in the human body?

Accepted Answer

Atlanto-occipital joint (nodding the head)

Question 12

A muscle that encircles an opening and acts as a sphincter is best described as which muscle shape?

Accepted Answer

Circular

Question 13

Which of the following best describes the mechanical advantage of a lever system?

Accepted Answer

A system where a small force moves a large load.

Question 14

Which muscle is primarily responsible for pulling the cheek inward, as in sucking or whistling?

Accepted Answer

Buccinator

Question 15

A muscle is named 'sternocleidomastoid.' Based on its name, which structures does it attach to?

Accepted Answer

Sternum, clavicle, and mastoid process

Question 16

Which of the following statements about muscle origin and insertion is correct?

Accepted Answer

The origin is the more fixed attachment point, and the insertion is on the bone that moves.

Question 17

If a muscle is described as 'bipennate,' what does this indicate about its structure?

Accepted Answer

It has fascicles that attach obliquely to a single tendon from both sides.

Question 18

Which of the following best describes the function of a synergist muscle?

Accepted Answer

It works with the agonist to guide movement and ensure it is smooth.

Question 19

During a biceps curl, which component of the lever system does the elbow joint represent?

Accepted Answer

Fulcrum

Question 20

Which of the following is NOT a correct pairing of muscle name and function?

Accepted Answer

Adductor longus – abducts the thigh

The Muscular System: Structure, Function, and Major Muscles

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드