Question 1

Which of the following best describes the role of an antagonist muscle during elbow flexion?

Accepted Answer

It opposes the action of the prime mover to control movement.

Question 2

A patient is unable to abduct their arm at the shoulder. Which muscle is most likely injured?

Accepted Answer

Deltoid

Question 3

Which muscle acts as a synergist during flexion of the forearm at the elbow joint?

Accepted Answer

Brachioradialis

Question 4

Given the following muscle actions, which muscle is primarily responsible for extension of the forearm?

Accepted Answer

Triceps brachii

Question 5

If a muscle originates on the scapula and inserts on the radius, which of the following is most likely its primary action?

Accepted Answer

Flexion of the forearm

Question 6

Which of the following equations correctly represents the calculation of muscle force ($$F) $$given cross-sectional area ($$A) $$and specific tension ($$T$$)?

Accepted Answer

$$F = A 	imes T$$

Question 7

A soccer player suffers a strain in the anterior compartment of the thigh. Which muscle is most likely affected?

Accepted Answer

Rectus femoris

Question 8

Which muscle is located in the posterior compartment of the arm and is responsible for elbow extension?

Accepted Answer

Triceps brachii

Question 9

A patient presents with difficulty dorsiflexing the foot. Which compartment of the leg is most likely affected?

Accepted Answer

Anterior compartment

Question 10

Which of the following is the correct definition of a muscle's origin?

Accepted Answer

The point where the muscle attaches to the bone that remains stationary during contraction.

Question 11

During a biceps curl, which muscle acts as the prime mover?

Accepted Answer

Biceps brachii

Question 12

Which muscle is found in the lateral compartment of the leg and is primarily responsible for eversion of the foot?

Accepted Answer

Peroneus (fibularis) longus

Question 13

A patient has weakness in the posterior compartment of the thigh. Which movement would be most affected?

Accepted Answer

Flexion of the knee

Question 14

Which of the following muscles is NOT part of the rotator cuff?

Accepted Answer

Teres major

Question 15

If the insertion of a muscle is moved closer to its origin, what is the likely effect on the range of motion?

Accepted Answer

The range of motion decreases.

Question 16

Which muscle is responsible for adduction of the arm at the shoulder joint?

Accepted Answer

Pectoralis major

Question 17

A patient with damage to the medial compartment of the thigh would have difficulty performing which movement?

Accepted Answer

Adduction of the thigh

Question 18

Which of the following is a criterion used in naming muscles?

Accepted Answer

The location of the muscle

Question 19

Which muscle is found in the anterior compartment of the forearm and is responsible for flexion of the wrist?

Accepted Answer

Flexor carpi radialis

Question 20

A muscle is described as having its origin on the femur and its insertion on the tibia. Which joint does this muscle most likely act upon?

Accepted Answer

Knee joint

Chapter 10: The Muscular System – Structure, Function, and Major Muscles

Study Guide - Practice Questions

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