Question 1

Which of the following best describes a synarthrosis joint?

Accepted Answer

A joint that allows no movement, such as the sutures of the skull

Question 2

Which structural classification of joints is characterized by bones held together by dense connective tissue, and typically allows little to no movement?

Accepted Answer

Fibrous joints

Question 3

Which of the following is an example of a cartilaginous joint, and what is its primary function?

Accepted Answer

Intervertebral disc; allows limited movement and absorbs shock

Question 4

A patient presents with limited movement in the pubic symphysis after childbirth. Which type of joint is the pubic symphysis, and what is the main tissue involved?

Accepted Answer

Cartilaginous joint; fibrocartilage

Question 5

Which accessory structure of a synovial joint reduces friction between tendons and bones during movement?

Accepted Answer

Bursa

Question 6

Compare the movement allowed by the elbow joint and the shoulder joint. Which statement is correct?

Accepted Answer

The elbow joint allows only flexion and extension, while the shoulder joint allows flexion, extension, abduction, adduction, rotation, and circumduction

Question 7

Which formula correctly represents the relationship between the degree of movement ($$M) $$and the type of joint ($$J$$), where $$J = 1$$ for synarthrosis, $$J = 2$$ for amphiarthrosis, and $$J = 3$$ for diarthrosis?

Accepted Answer

$$M = J$$

Question 8

A football player suffers a torn anterior cruciate ligament (ACL). Which type of joint is affected, and what is the main function of the ACL?

Accepted Answer

Synovial joint; stabilizes the knee by preventing anterior displacement of the tibia

Question 9

Which of the following best distinguishes fibrous joints from cartilaginous joints?

Accepted Answer

Fibrous joints are held together by dense connective tissue, while cartilaginous joints are held together by cartilage

Question 10

Which of the following movements is NOT possible at a hinge joint such as the elbow?

Accepted Answer

Rotation

Question 11

A dentist is examining the joint that anchors a tooth in its socket. What is the name and classification of this joint?

Accepted Answer

Gomphosis; fibrous joint

Question 12

Which of the following statements about synovial joints is correct?

Accepted Answer

They are characterized by a joint cavity filled with synovial fluid

Question 13

Which joint type is most likely to be affected by osteoarthritis, and why?

Accepted Answer

Synovial joints, because their articular cartilage can wear down over time

Question 14

A patient has a herniated intervertebral disc. Which type of joint is involved, and what is the main tissue affected?

Accepted Answer

Cartilaginous joint; fibrocartilage

Question 15

Which of the following best describes the movement allowed by a ball-and-socket joint?

Accepted Answer

Rotation, flexion, extension, abduction, adduction, and circumduction

Question 16

Which of the following equations best represents the relationship between the number of axes of movement ($$A) $$and the type of synovial joint ($$T$$), where $$T = 1$$ for hinge, $$T = 2$$ for condyloid, and $$T = 3$$ for ball-and-socket?

Accepted Answer

$$A = T$$

Question 17

Which of the following is a key difference between the structural features of the knee and the hip joint?

Accepted Answer

The knee contains menisci for shock absorption, while the hip does not

Question 18

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

Accepted Answer

The shoulder joint has a shallower socket and less bony stability compared to the hip

Question 19

A patient is unable to perform abduction at the shoulder. Which type of synovial joint is affected, and what movement is impaired?

Accepted Answer

Ball-and-socket joint; abduction

Question 20

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

Accepted Answer

It absorbs shock and reduces friction between articulating bones

Study Notes: Classification and Function of Joints

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