Question 1

Which of the following best describes the primary action of the sternocleidomastoid muscle?

Accepted Answer

Rotation and flexion of the neck

Question 2

A patient presents with difficulty flexing their hip and complains of pain in the lower back. Which muscle is most likely involved?

Accepted Answer

Psoas major

Question 3

Which of the following statements about muscle compartments is correct?

Accepted Answer

Compartments are separated by intermuscular septa.

Question 4

Compartment syndrome can lead to which of the following if not treated within 2–4 hours?

Accepted Answer

Paralysis or death of the muscle

Question 5

Which muscle is primarily responsible for flexion at the elbow joint?

Accepted Answer

Biceps brachii

Question 6

A patient is unable to dorsiflex their foot after a leg injury. Which compartment is most likely affected?

Accepted Answer

Anterior compartment of the leg

Question 7

Which of the following best explains why compartment syndrome leads to ischemia?

Accepted Answer

Elevated pressure compresses blood vessels, reducing blood flow

Question 8

Which muscle is a major flexor of the hip joint and is often involved in lower back pain due to its anatomical position?

Accepted Answer

Psoas major

Question 9

If the deep fascia of the forearm is damaged, which of the following is a likely consequence?

Accepted Answer

Loss of compartmentalization, increasing risk of widespread infection

Question 10

Which of the following is a real-life scenario that could lead to compartment syndrome?

Accepted Answer

A severe crush injury to the lower leg

Question 11

Which of the following muscles is NOT involved in movement at the glenohumeral (shoulder) joint?

Accepted Answer

Biceps femoris

Question 12

A patient with carpal tunnel syndrome is most likely to experience symptoms due to compression of which structure?

Accepted Answer

Median nerve

Question 13

Which movement is produced by contraction of the muscles in the posterior compartment of the leg?

Accepted Answer

Plantar flexion of the foot

Question 14

Which of the following best describes the function of intermuscular septa?

Accepted Answer

They separate muscle compartments within a limb

Question 15

A patient is unable to extend their knee after a traumatic injury. Which muscle group is most likely damaged?

Accepted Answer

Quadriceps femoris

Question 16

Which of the following is a direct consequence of untreated compartment syndrome?

Accepted Answer

Necrosis of muscle tissue

Question 17

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

Accepted Answer

Deltoid

Question 18

Which of the following best describes the relationship between muscle compartments and nerve supply?

Accepted Answer

Each compartment has a specific nerve supply

Question 19

Which of the following is the correct formula for calculating pressure in a compartment, which is critical in diagnosing compartment syndrome?

Accepted Answer

$$P = \frac{F}{A}$$

Question 20

A runner experiences pain and swelling in the anterior compartment of the leg after a long race. Which movement is most likely to be impaired?

Accepted Answer

Dorsiflexion of the foot

The Muscular System: Muscle Compartments and Clinical Relevance

Study Guide - Practice Questions