Question 1

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

Accepted Answer

Flexion

Question 2

A soccer player twists their knee while changing direction, resulting in a torn anterior cruciate ligament (ACL). Which other structures are most likely to be injured in the classic 'unhappy triad'?

Accepted Answer

Medial meniscus and medial collateral ligament

Question 3

Which joint is most likely to dislocate anteriorly due to its shallow socket, causing the mouth to remain open until manually reset?

Accepted Answer

Temporomandibular joint (TMJ)

Question 4

What is the primary stabilizer of the glenohumeral (shoulder) joint?

Accepted Answer

Tendons of the rotator cuff muscles

Question 5

Which movement describes turning the sole of the foot medially?

Accepted Answer

Inversion

Question 6

A patient presents with joint pain, swelling, and stiffness in both hands. Blood tests reveal autoimmune markers. Which condition is most likely?

Accepted Answer

Rheumatoid arthritis

Question 7

Which equation best represents the relationship between force ($$F$$), area ($$A$$), and pressure ($$P) in a $$joint during weight-bearing activities?

Accepted Answer

$$P = F \div A$$

Question 8

Which movement involves moving a limb in a circular motion so that the distal end describes a cone in space?

Accepted Answer

Circumduction

Question 9

During pronation of the forearm, which bone rotates over the other?

Accepted Answer

Radius rotates over ulna

Question 10

Which structure deepens the socket of the hip joint, increasing its stability?

Accepted Answer

Acetabular labrum

Question 11

A patient with gouty arthritis should avoid foods high in purines. Which of the following is a high-purine food?

Accepted Answer

Liver

Question 12

Which movement is described as moving the mandible backward, as when pulling the jaw in?

Accepted Answer

Retraction

Question 13

Which ligament prevents excessive sideways movement of the knee joint when the knee is extended?

Accepted Answer

Medial collateral ligament (MCL)

Question 14

Which type of arthritis is most commonly associated with aging and is characterized by the breakdown of articular cartilage?

Accepted Answer

Osteoarthritis

Question 15

Which movement is defined as increasing the angle between two bones, usually in the sagittal plane?

Accepted Answer

Extension

Question 16

Which joint is most likely to be affected by Lyme disease, leading to pain and arthritis after a tick bite?

Accepted Answer

Knee joint

Question 17

Which movement describes touching the thumb to the tips of other fingers?

Accepted Answer

Opposition

Question 18

Which equation would you use to calculate the torque ($$	au) $$produced at a joint by a muscle force ($$F) $$applied at a distance ($$r) $$from the joint axis?

Accepted Answer

$$	au = F 	imes r$$

Question 19

Which movement involves lowering a body part, such as dropping the shoulders?

Accepted Answer

Depression

Question 20

Which joint is most likely to suffer from a meniscus tear due to rotational stress while the joint is extended?

Accepted Answer

Knee joint

Movements and Structure of Synovial Joints

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