Question 1

Which of the following best describes the function of the retinaculum in the muscular system?

Accepted Answer

It is a translucent band of fibrous tissue and fascia that holds down tendons in the wrist and ankle.

Question 2

A patient is diagnosed with muscular dystrophy. Which of the following best explains the progression of this disease?

Accepted Answer

It is a progressive disease that causes muscle weakness and wasting, eventually leading to loss of mobility.

Question 3

Which of the following statements about skeletal muscle is correct?

Accepted Answer

Skeletal muscle is voluntary and is responsible for body movements.

Question 4

During a muscle contraction, which of the following events occurs at the molecular level?

Accepted Answer

Thin actin strands slide between thick myosin strands.

Question 5

Which muscle is named for its straight orientation in the abdomen?

Accepted Answer

Rectus abdominis

Question 6

A patient presents with pain and inflammation at the elbow after repetitive wrist flexion. Which condition is most likely?

Accepted Answer

Pitcher's elbow (medial epicondylitis)

Question 7

Which of the following best describes the role of acetylcholine at the neuromuscular junction?

Accepted Answer

It triggers the release of calcium ions in the muscle fiber, initiating contraction.

Question 8

Which structure attaches a muscle to a bone and is composed of white fibrous connective tissue?

Accepted Answer

Tendon

Question 9

A patient is unable to extend their fingers after an injury. Which muscle group is most likely affected?

Accepted Answer

Extensor muscles of the forearm

Question 10

Which of the following is true regarding muscle tone?

Accepted Answer

It is the only skeletal muscle activity not under conscious control.

Question 11

Which of the following best describes the origin of a muscle?

Accepted Answer

The site where a tendon attaches to a stationary or near-stationary bone.

Question 12

A patient with malnutrition is found to have severe muscle wasting and weakness. What is the medical term for this condition?

Accepted Answer

Muscle atrophy

Question 13

Which of the following is a function of the muscular system?

Accepted Answer

Maintaining body position and producing movement of the bony framework

Question 14

Which muscle is responsible for flexing the arm at the elbow and has two heads of origin?

Accepted Answer

Biceps brachii

Question 15

A patient is unable to walk on tiptoe due to weakness in the calf. Which muscle is most likely affected?

Accepted Answer

Gastrocnemius

Question 16

Which of the following best describes the structure and function of a bursa?

Accepted Answer

A membranous, fluid-filled sac that reduces friction where a tendon rubs against a bone

Question 17

Which of the following is the correct sequence of structures from largest to smallest in a skeletal muscle?

Accepted Answer

Fascicle → Muscle fiber → Myofibril

Question 18

A patient is prescribed an intramuscular injection for a vaccine. Which muscle group is most commonly used for this procedure in infants?

Accepted Answer

Thigh muscles

Question 19

Which of the following best describes the action of the gluteus maximus muscle?

Accepted Answer

Extends and laterally rotates the thigh at the hip

Question 20

A physical therapist is testing a patient's deep tendon reflex by tapping below the patella. Which muscle group is being tested?

Accepted Answer

Quadriceps femoris

Study Guide: Medical Terminology of the Muscular System (Orthopedics)

Study Guide - Practice Questions