$$\text{Range of Motion} \propto \text{Number of Axes of Movement}$$

Question 1

Which of the following best describes a diarthrosis joint?

Accepted Answer

A freely movable joint, typically synovial, with a joint capsule and synovial fluid

Question 2

Which of the following is NOT a structural component of a typical synovial joint?

Accepted Answer

Epiphyseal plate

Question 3

Flexion and extension movements of the elbow occur in which anatomical plane?

Accepted Answer

Sagittal (longitudinal) plane

Question 4

Which type of synovial joint allows for the greatest range of motion?

Accepted Answer

Ball and socket joint

Question 5

A patient presents with limited abduction and adduction at the thumb. Which type of synovial joint is most likely affected?

Accepted Answer

Saddle joint

Question 6

Which of the following best describes the movement of abduction?

Accepted Answer

Movement of a body part away from the midline

Question 7

The temporomandibular joint (TMJ) is classified as which type of synovial joint?

Accepted Answer

Modified hinge joint with an articular disc

Question 8

Which of the following joints is an example of a pivot joint?

Accepted Answer

Atlantoaxial joint (between C1 and C2 vertebrae)

Question 9

A compound synovial joint is best defined as:

Accepted Answer

A joint involving articulation between more than two bones

Question 10

Which of the following best explains why plantar and dorsiflexion are used to describe movements at the ankle?

Accepted Answer

Because the lower limb undergoes medial rotation during development, altering the orientation of flexion and extension

Question 11

Which of the following is a correct pairing of synovial joint type and a real-life example?

Accepted Answer

Hinge joint – knee

Question 12

Which of the following movements occurs in the coronal (frontal) plane?

Accepted Answer

Abduction

Question 13

A patient is unable to rotate their head from side to side (as in shaking the head 'no'). Which joint is most likely affected?

Accepted Answer

Atlantoaxial joint

Question 14

Which of the following best describes the function of synovial fluid?

Accepted Answer

Lubricates the joint and reduces friction between articular cartilages

Question 15

Which equation best represents the relationship between joint movement and the number of axes in a synovial joint?

Accepted Answer

$$	ext{Range of Motion} \propto 	ext{Number of Axes of Movement}$$

Question 16

Which of the following is true regarding the articular cartilage in synovial joints?

Accepted Answer

It covers the ends of bones and reduces friction

Question 17

Which joint is an example of a biaxial synovial joint?

Accepted Answer

Metacarpophalangeal (knuckle) joint

Question 18

A football player suffers a knee injury. Which of the following best describes the knee joint?

Accepted Answer

A complex synovial joint with an articular disc dividing the cavity

Question 19

Which of the following best describes a gliding (plane) synovial joint?

Accepted Answer

Allows sliding or translational movement between flat surfaces

Question 20

Which of the following is a correct statement about the sternoclavicular joint?

Accepted Answer

It contains an articular disc and has saddle-like properties

Synovial Joint Structure and Classification: Arthrology Study Notes

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