Question 1

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

Accepted Answer

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

Question 2

A patient presents with muscle weakness and progressive difficulty standing up, requiring the use of both arms and legs to rise. Which disease is most likely?

Accepted Answer

Muscular dystrophy

Question 3

Which muscle type is characterized by prominent striations and multiple nuclei per cell?

Accepted Answer

Skeletal muscle

Question 4

The term 'biceps brachii' indicates a muscle with:

Accepted Answer

Two origins in the arm

Question 5

Which of the following best describes the process of muscle contraction at the cellular level?

Accepted Answer

Actin slides between myosin filaments, shortening the muscle.

Question 6

A patient with limited mobility develops a permanent flexion of the hand. This condition is best described as:

Accepted Answer

Muscle contracture

Question 7

Which structure attaches a muscle to a bone?

Accepted Answer

Tendon

Question 8

Which of the following is NOT a function of the muscular system?

Accepted Answer

Producing hormones for metabolism

Question 9

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

Accepted Answer

Rectus abdominis

Question 10

A percussion hammer is used to tap just below the patella to test which reflex?

Accepted Answer

Deep tendon reflex

Question 11

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.

Question 12

Which muscle movement term describes moving a limb away from the midline of the body?

Accepted Answer

Abduction

Question 13

A patient is diagnosed with an overuse injury from tightly gripping a baseball while flexing the wrist. What is the most likely diagnosis?

Accepted Answer

Pitcher's elbow (medial epicondylitis)

Question 14

Which of the following is true about muscle tone?

Accepted Answer

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

Question 15

Which structure is a thin layer of connective tissue that wraps each muscle and merges into its tendon?

Accepted Answer

Fascia

Question 16

Which muscle is responsible for flexing the arm at the elbow?

Accepted Answer

Biceps brachii

Question 17

A patient with malnutrition presents with severe weight loss and muscle wasting. What is the medical term for this condition?

Accepted Answer

Muscle atrophy

Question 18

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

Accepted Answer

The site where a tendon attaches to the bone that moves during contraction

Question 19

Which muscle is located directly above the temporal bone on the side of the cranium?

Accepted Answer

Temporalis

Question 20

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

Accepted Answer

It reduces friction where a tendon rubs against a bone.

Orthopedics: Muscular System - Medical Terminology Study Guide

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