Question 1

Which of the following is NOT a primary function of appendicular muscles?

Accepted Answer

Regulating blood pressure in the limbs

Question 2

The muscles of the pectoral girdle and upper limb are primarily responsible for which of the following actions?

Accepted Answer

Stabilizing the shoulder and moving the arm

Question 3

Which muscle group is most involved in absorbing shocks and jolts as you walk, run, or jump?

Accepted Answer

Muscles of the pelvic girdle and lower limb

Question 4

If a muscle's insertion is close to the joint, what is its primary function?

Accepted Answer

Producing movement at the joint (spurt muscle)

Question 5

Which of the following best describes a shunt muscle?

Accepted Answer

A muscle whose insertion is far from the joint and primarily stabilizes the joint

Question 6

Which action line at the shoulder joint is responsible for abduction?

Accepted Answer

Lateral aspect

Question 7

A patient presents with difficulty abducting their arm. Which muscle group is most likely affected?

Accepted Answer

Muscles that move the arm

Question 8

Which equation best represents the torque ($	au$) produced by a spurt muscle at a joint?

Accepted Answer

$	au = F 	imes d$

Question 9

If a muscle crosses the anterior aspect of a joint, what is its most likely action?

Accepted Answer

Flexion

Question 10

Which of the following scenarios best illustrates the function of a shunt muscle?

Accepted Answer

A muscle that stabilizes the shoulder during heavy lifting

Question 11

Which of the following is a major theme in the organization of appendicular musculature?

Accepted Answer

Muscles are grouped by their location and primary action

Question 12

A muscle that crosses the medial aspect of a joint is most likely to produce which movement?

Accepted Answer

Medial rotation or adduction

Question 13

Which of the following is true regarding the muscles of the pelvic girdle and lower limb?

Accepted Answer

They are larger and more powerful than those of the upper limb

Question 14

Which muscle group is primarily responsible for moving the thigh?

Accepted Answer

Muscles of the pelvic girdle

Question 15

Which of the following is a real-world example of a spurt muscle acting as a prime mover?

Accepted Answer

The biceps brachii flexing the elbow during a bicep curl

Question 16

Which of the following statements about action lines is correct?

Accepted Answer

Action lines crossing the lateral aspect of a joint are abductors

Question 17

Which of the following best explains why appendicular muscles aid in strengthening the joint area?

Accepted Answer

They stabilize the joint and absorb forces during movement

Question 18

Which of the following is a correct pairing of muscle group and function?

Accepted Answer

Muscles of the forearm and hand: Move the forearm and hand

Question 19

Which of the following is a plausible consequence of injury to the appendicular muscles responsible for absorbing shocks?

Accepted Answer

Increased risk of joint dislocation during running

Question 20

Which equation would you use to calculate the force ($F$) required for a muscle to produce a given torque ($	au$) at a joint, given the distance ($d$) from the joint to the insertion?

Accepted Answer

$F = 	au / d$

Appendicular Musculature: Structure and Function in the Muscular System

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