Question 1

Which of the following best describes the main functional difference between synarthroses, amphiarthroses, and diarthroses joints?

Accepted Answer

Synarthroses are immovable, amphiarthroses are slightly movable, and diarthroses are freely movable.

Question 2

A patient presents with a torn anterior cruciate ligament (ACL) after a lateral blow to the knee. Which of the following structures is LEAST likely to be injured in this scenario?

Accepted Answer

Fibular collateral ligament

Question 3

Which of the following is a distinguishing feature of synovial joints that is NOT found in fibrous or cartilaginous joints?

Accepted Answer

Presence of a joint cavity filled with synovial fluid

Question 4

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

Accepted Answer

Gomphosis

Question 5

Which movement is described as decreasing the angle between two bones along the sagittal plane?

Accepted Answer

Flexion

Question 6

A patient is unable to rotate their forearm so that the palm faces upward. Which movement is impaired?

Accepted Answer

Supination

Question 7

Which of the following best explains why cartilage injuries in joints heal poorly?

Accepted Answer

Cartilage lacks blood vessels, limiting nutrient delivery and repair.

Question 8

Which type of synovial joint allows movement in two planes (biaxial) and is found at the metacarpophalangeal (knuckle) joints?

Accepted Answer

Condylar joint

Question 9

A football player suffers a dislocation of the shoulder. Which of the following best describes this injury?

Accepted Answer

The bones are forced out of alignment and must be reduced.

Question 10

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

Accepted Answer

Synovial membrane

Question 11

Which of the following movements is unique to the thumb and allows humans to grasp objects?

Accepted Answer

Opposition

Question 12

A patient with a torn meniscus in the knee is at increased risk for which long-term complication?

Accepted Answer

Osteoarthritis

Question 13

Which of the following best describes the role of muscle tone in joint stability?

Accepted Answer

Muscle tone keeps tendons taut, reinforcing joints.

Question 14

Which of the following is an example of a cartilaginous joint that allows slight movement and is found between vertebral bodies?

Accepted Answer

Symphysis

Question 15

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

Accepted Answer

Inversion

Question 16

Which of the following best describes the movement allowed by a pivot joint?

Accepted Answer

Rotation around a single axis

Question 17

Which of the following is a real-life example of a plane joint?

Accepted Answer

Intercarpal joints

Question 18

A patient presents with pain and swelling after a severe ankle sprain. Which of the following best explains why healing is slow?

Accepted Answer

Ligaments have poor vascularization, limiting nutrient delivery.

Question 19

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

Accepted Answer

Binding bones together

Question 20

Which of the following best describes the movement of abduction at a synovial joint?

Accepted Answer

Movement away from the midline

Joints (Articulations): Structure, Classification, and Function

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