Question 1

Which term describes the attachment site of a muscle to the stationary bone?

Accepted Answer

Origin

Question 2

When skeletal muscles contract, they exert force on tendons, which then pull on bones or other structures. What is the result of this action?

Accepted Answer

Bones move at joints

Question 3

Which muscle fascicle arrangement allows for the greatest range of motion but the least power?

Accepted Answer

Parallel

Question 4

If a muscle is responsible for producing a specific movement at a joint, what is this muscle called?

Accepted Answer

Prime mover (agonist)

Question 5

Which of the following statements about muscle fascicle arrangement is correct?

Accepted Answer

Fascicles form patterns with respect to the tendons, such as parallel, fusiform, and pennate.

Question 6

What is the role of a synergist muscle during movement?

Accepted Answer

It assists the prime mover by adding extra force or reducing unnecessary movement.

Question 7

Which equation best represents the relationship between muscle force and cross-sectional area?

Accepted Answer

$F = k 	imes A$

Question 8

A muscle that performs the opposite function of the prime mover is called the:

Accepted Answer

Antagonist

Question 9

Which fascicle arrangement is most likely to produce the greatest power?

Accepted Answer

Pennate

Question 10

During elbow flexion, which muscle acts as the antagonist?

Accepted Answer

Triceps brachii

Question 11

Which of the following is NOT a common pattern of muscle fascicle arrangement?

Accepted Answer

Rectangular

Question 12

If the origin of a muscle is on the scapula and the insertion is on the radius, what type of movement does contraction of this muscle produce?

Accepted Answer

Movement of the radius

Question 13

Which statement best explains why muscles rarely act alone during movement?

Accepted Answer

Movements usually result from several skeletal muscles acting as a group.

Question 14

What is the primary function of a fixator muscle?

Accepted Answer

To stabilize the origin of the prime mover

Question 15

Which of the following best describes the compromise between power and range of motion in muscle fascicles?

Accepted Answer

The more fibers in a muscle, the greater the power it can produce.

Question 16

Which muscle arrangement is best suited for sphincters, such as those found in the digestive tract?

Accepted Answer

Circular

Question 17

A muscle with a triangular (convergent) fascicle arrangement is likely to:

Accepted Answer

Converge on a single tendon

Question 18

Which of the following is true regarding the insertion of a muscle?

Accepted Answer

It is the attachment to the movable bone.

Question 19

Which muscle role is most important for preventing unwanted movement at a joint?

Accepted Answer

Fixator

Question 20

If a muscle has a pennate arrangement, what can be inferred about its function?

Accepted Answer

It is designed for power.

Chapter 11: The Muscular System: Structure, Function, and Coordination

Study Guide - Practice Questions