Question 1

Which of the following best describes a synostosis, and in which type of joint does it most commonly occur?

Accepted Answer

A fusion of two bones at a fibrous suture, most commonly seen in the skull.

Question 2

A patient presents with an inability to perform dorsiflexion after an ankle injury. Which movement is most likely impaired?

Accepted Answer

Bringing the toes upward toward the shin.

Question 3

Which of the following correctly matches the joint type with its example and primary movement?

Accepted Answer

Saddle joint – carpometacarpal of thumb – flexion/extension and abduction/adduction

Question 4

Which of the following structures is responsible for secreting synovial fluid in a synovial joint?

Accepted Answer

Synovial membrane

Question 5

A football player suffers a knee injury involving the 'unholy trio.' Which structures are most likely damaged?

Accepted Answer

Anterior cruciate ligament (ACL), medial collateral ligament (MCL), medial meniscus

Question 6

Which movement is defined as moving a limb away from the midline of the body?

Accepted Answer

Abduction

Question 7

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

Accepted Answer

The shoulder joint sacrifices stability for mobility due to a shallow glenoid cavity and less robust ligaments.

Question 8

Which of the following is a correct pairing of a joint and its functional classification?

Accepted Answer

Pubic symphysis – amphiarthrosis

Question 9

A dentist is examining the periodontal ligament. Which type of joint is being observed?

Accepted Answer

Gomphosis

Question 10

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

Accepted Answer

Turning the palm downward so the thumb points toward the body in anatomical position.

Question 11

Which of the following statements about the knee joint is TRUE?

Accepted Answer

It is stabilized by the ACL, PCL, MCL, and LCL ligaments.

Question 12

A patient is unable to touch the pad of their thumb to the pads of their other fingers. Which movement is impaired?

Accepted Answer

Opposition

Question 13

Which of the following best describes a synchondrosis?

Accepted Answer

A joint where bones are joined by hyaline cartilage, such as the epiphyseal plate.

Question 14

Which of the following is a distinguishing feature of all synovial joints?

Accepted Answer

Presence of a joint cavity filled with synovial fluid

Question 15

A patient presents with a jaw that clicks and causes pain when opening and closing the mouth. Which joint is most likely involved?

Accepted Answer

Temporomandibular joint

Question 16

Which of the following best describes the difference between a dislocation and a separation at the shoulder?

Accepted Answer

A dislocation involves the glenohumeral joint, while a separation involves the acromioclavicular joint.

Question 17

Which of the following best describes the movement of circumduction?

Accepted Answer

The distal end of a limb describes a cone while the proximal end remains stationary.

Question 18

Which of the following is TRUE regarding the hip (coxal) joint compared to the shoulder joint?

Accepted Answer

The hip joint is more stable and less mobile due to deeper socket and stronger ligaments.

Question 19

A gymnast lands awkwardly and suffers an inversion injury to the ankle. Which structure is most likely injured?

Accepted Answer

Lateral ligaments of the ankle

Question 20

Which of the following best describes a plane (gliding) joint and its typical movement?

Accepted Answer

A joint with flat surfaces allowing bones to slide past each other, such as the intercarpal joints.

Chapter 8: Joints – Structure, Classification, and Function

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