Question 1

Which of the following best describes the function of articular cartilage in synovial joints?

Accepted Answer

It covers the ends of bones to prevent crushing and reduce friction.

Question 2

A patient presents with pain and swelling in the knee after a lateral blow during a soccer game. Which structures are most likely injured in the classic 'unhappy triad'?

Accepted Answer

Anterior cruciate ligament, tibial collateral ligament, and medial meniscus

Question 3

Which of the following is NOT a general feature of synovial joints?

Accepted Answer

Epiphyseal plate

Question 4

What is the primary role of synovial fluid within the joint cavity?

Accepted Answer

To lubricate and nourish articular cartilage, and remove debris

Question 5

Which type of ligament is found deep to the capsule and covered by the synovial membrane?

Accepted Answer

Intracapsular ligament

Question 6

A runner twists her knee while changing direction and tears her ACL. What is the main function of the anterior cruciate ligament (ACL)?

Accepted Answer

Prevents forward sliding of tibia and stops hyperextension of knee

Question 7

Which of the following movements is correctly paired with its description?

Accepted Answer

Supination: palms face anteriorly, radius and ulna are parallel

Question 8

Which factor plays the most important role in stabilizing synovial joints such as the knee and shoulder?

Accepted Answer

Muscle tone keeping tendons taut

Question 9

Which equation best represents the relationship between joint stability ($$S$$), number of ligaments ($$L$$), and muscle tone ($$M$$), if muscle tone is the most significant factor?

Accepted Answer

$$S = 0.2L + 0.8M$$

Question 10

Which structure in the knee joint acts to improve the fit of the femoral condyles on the tibia, stabilize the joint, and reduce wear and tear?

Accepted Answer

Articular discs (menisci)

Question 11

A patient has difficulty with dorsiflexion of the foot. Which movement is impaired?

Accepted Answer

Bending the foot toward the shin

Question 12

Which of the following best describes the difference between bursae and tendon sheaths?

Accepted Answer

Bursae are small sacs that reduce friction between moving structures; tendon sheaths are elongated bursae that wrap around tendons.

Question 13

Which of the following is a hinge joint that allows flexion, extension, and some rotation when partly flexed?

Accepted Answer

Tibiofemoral joint

Question 14

If a doctor taps the patellar ligament to test the knee-jerk reflex, which structure is being assessed?

Accepted Answer

Patellar ligament

Question 15

Which of the following correctly matches the ligament with its function in the knee joint?

Accepted Answer

Tibial collateral ligament: prevents rotation when knee is extended

Question 16

Which of the following movements occurs when the sole of the foot faces laterally?

Accepted Answer

Eversion

Question 17

Which of the following is TRUE regarding the joint capsule of the knee?

Accepted Answer

It is thin and absent anteriorly, where the quadriceps tendon provides support.

Question 18

Which of the following best explains why the knee is vulnerable to horizontal blows?

Accepted Answer

The knee absorbs vertical force well but is less stable against lateral forces due to its structure and ligament arrangement.

Question 19

Which of the following is a special movement that allows the thumb to touch the tips of other fingers on the same hand?

Accepted Answer

Opposition

Synovial Joints and the Knee: Structure, Function, and Clinical Relevance

Study Guide - Practice Questions

Study Guide - Flashcards