Question 1

Which of the following best describes a synovial joint?

Accepted Answer

A joint where bones are separated by a fluid-filled cavity and are freely movable.

Question 2

A patient presents with pain and popping sounds in the jaw, and the mouth remains open after a blow to the face. Which joint is most likely dislocated, and why is this joint particularly vulnerable?

Accepted Answer

The temporomandibular joint, because it has a shallow socket.

Question 3

Which of the following movements is defined as decreasing the angle between two bones, usually in the sagittal plane?

Accepted Answer

Flexion

Question 4

Which structural feature of synovial joints is responsible for producing synovial fluid?

Accepted Answer

Synovial membrane

Question 5

A football player receives a blow to the lateral side of the knee while the foot is planted. Which structures are most likely injured, and what is this injury commonly called?

Accepted Answer

Anterior cruciate ligament, tibial collateral ligament, and medial meniscus; called the 'unhappy triad'

Question 6

Which of the following is NOT a factor that contributes significantly to the stability of synovial joints?

Accepted Answer

Presence of a joint cavity

Question 7

Which type of synovial joint allows movement in all three planes and is found in the shoulder and hip?

Accepted Answer

Ball-and-socket joint

Question 8

A dentist is explaining the type of joint that holds a tooth in its socket. Which type of fibrous joint is this?

Accepted Answer

Gomphosis

Question 9

Which of the following best describes the movement of abduction?

Accepted Answer

Moving a limb away from the body midline in the frontal plane

Question 10

A patient is unable to perform dorsiflexion of the foot. Which movement is impaired?

Accepted Answer

Moving the superior surface of the foot toward the shin

Question 11

Which of the following is a cartilaginous joint where bones are united by fibrocartilage?

Accepted Answer

Symphysis

Question 12

Which of the following best explains why the shoulder joint is more prone to dislocation than the hip joint?

Accepted Answer

The shoulder joint has a shallow socket and less ligamentous support.

Question 13

Which of the following movements is unique to the thumb and allows it to touch the tips of other fingers?

Accepted Answer

Opposition

Question 14

Which of the following is a correct pairing of joint type and example?

Accepted Answer

Plane joint – intercarpal joints

Question 15

A patient with a torn anterior cruciate ligament (ACL) is most likely to experience instability in which joint?

Accepted Answer

Knee joint

Question 16

Which of the following best describes the function of bursae in synovial joints?

Accepted Answer

They decrease friction where ligaments or tendons would rub against bone.

Question 17

Which of the following is an example of a synchondrosis?

Accepted Answer

Joint between the first rib and sternum

Question 18

Which movement occurs when the radius rotates over the ulna, turning the palm downward?

Accepted Answer

Pronation

Question 19

Which of the following statements about muscle tone and joint stability is correct?

Accepted Answer

Muscle tone keeps tendons taut and is the most important factor in reinforcing joints.

Question 20

A patient is unable to move their foot so that the sole turns medially. Which movement is impaired?

Accepted Answer

Inversion

Chapter 8: Joints – Structure, Function, and Clinical Relevance

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