Question 1

A 25-year-old athlete suffers a severe blow to the lateral side of his knee during a football game. Which joint structure is most likely to be damaged, and what is its primary function?

Accepted Answer

The meniscus; it cushions and stabilizes the joint

Question 2

Which of the following best describes the relationship between joint mobility and stability?

Accepted Answer

As mobility increases, stability decreases

Question 3

A patient is diagnosed with a joint where bone has completely replaced cartilage, such as the fusion of the epiphyseal plate in adults. This type of joint is classified as:

Accepted Answer

Synostosis

Question 4

Which of the following movements correctly describes abduction at the shoulder joint?

Accepted Answer

Movement of the arm away from the midline of the body

Question 5

A dentist is examining the articulation between a tooth and its socket. This specific joint is classified as a:

Accepted Answer

Gomphosis

Question 6

Which of the following best explains why articular cartilage is essential in synovial joints?

Accepted Answer

It reduces friction between articulating bone surfaces

Question 7

A patient presents with chronic joint pain and swelling. Laboratory tests reveal autoantibodies attacking the synovial membrane. Which type of arthritis is most likely?

Accepted Answer

Rheumatoid arthritis

Question 8

Which of the following best describes the movement allowed by a pivot joint, such as the proximal radioulnar joint?

Accepted Answer

Rotation around a single axis

Question 9

During a biceps curl, which movement occurs at the elbow joint?

Accepted Answer

Flexion, decreasing the joint angle

Question 10

Which of the following is NOT a function of synovial fluid?

Accepted Answer

Production of energy for muscle contraction

Question 11

A muscle cell's ability to respond to a neural stimulus is known as:

Accepted Answer

Excitability

Question 12

Which of the following best describes the structural classification of the pubic symphysis?

Accepted Answer

Cartilaginous joint

Question 13

Which of the following is the functional unit of skeletal muscle contraction?

Accepted Answer

Sarcomere

Question 14

Which protein composes the thick filaments in a sarcomere?

Accepted Answer

Myosin

Question 15

During muscle contraction, calcium ions bind to which protein to initiate the process?

Accepted Answer

Troponin

Question 16

Which of the following best describes the movement of supination at the forearm?

Accepted Answer

Turning the palm upward

Question 17

A patient with osteoarthritis is most likely to have which of the following joint changes?

Accepted Answer

Degenerative wear-and-tear of articular cartilage

Question 18

Which of the following best describes the movement allowed by a ball-and-socket joint, such as the shoulder?

Accepted Answer

Movement in three axes

Question 19

Which of the following is a characteristic of skeletal muscle tissue?

Accepted Answer

Voluntary and striated

Question 20

A patient is unable to extend their knee after an injury. Which type of synovial joint is most likely affected?

Accepted Answer

Hinge joint

AHS 131 Exam Review: Articulations, Joints, and Muscle Fundamentals – Guided Study

Study Guide - Practice Questions

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