Question 1

Which connective tissue layer directly surrounds individual skeletal muscle fibers?

Accepted Answer

Endomysium

Question 2

A patient presents with pain and a palpable knot in their upper back after repetitive lifting. Which structure is most likely inflamed?

Accepted Answer

Fascia (myofascial trigger point)

Question 3

Which muscle shape is characterized by fascicles that converge to a single tendon, as seen in the pectoralis major?

Accepted Answer

Convergent

Question 4

Which of the following muscle names indicates a muscle that is located below another structure?

Accepted Answer

Infra-

Question 5

During elbow flexion, which muscle acts as the agonist?

Accepted Answer

Brachialis

Question 6

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

Accepted Answer

Third-class lever

Question 7

A muscle strain is best treated initially with the PRICE method. What does the 'C' in PRICE stand for?

Accepted Answer

Compression

Question 8

Which muscle is responsible for closing the eyelids during blinking?

Accepted Answer

Orbicularis oculi

Question 9

Which extrinsic eye muscle is responsible for rotating the eye inferiorly and laterally?

Accepted Answer

Superior oblique

Question 10

Which muscle group is primarily responsible for extending the vertebral column?

Accepted Answer

Erector spinae

Question 11

A patient with a complete tear of the calcaneal tendon will be unable to perform which movement?

Accepted Answer

Plantarflexion of the foot

Question 12

Which muscle is the primary agonist for arm abduction at the shoulder joint?

Accepted Answer

Deltoid (central portion)

Question 13

Which muscle is most likely to be strengthened by Kegel exercises to treat urinary incontinence?

Accepted Answer

Levator ani

Question 14

Which muscle is known as the 'boxer’s muscle' due to its role in protracting the scapula?

Accepted Answer

Serratus anterior

Question 15

A patient is unable to flex their thigh at the hip joint. Which muscle is most likely impaired?

Accepted Answer

Iliopsoas

Question 16

Which muscle group is responsible for extending the leg at the knee joint?

Accepted Answer

Quadriceps femoris

Question 17

Which muscle is the main dorsiflexor of the foot?

Accepted Answer

Tibialis anterior

Question 18

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

Accepted Answer

Deltoid

Question 19

A patient is unable to abduct their fingers. Which intrinsic hand muscle group is most likely affected?

Accepted Answer

Dorsal interossei

Question 20

Which abdominal muscle is primarily responsible for compressing the abdominal cavity and raising intra-abdominal pressure?

Accepted Answer

Transversus abdominis

Chapter 9: The Muscular System – Structured Study Notes

Study Guide - Practice Questions