Question

What are correct about synovial joint?
1. Ball and socket
2. Pivot joint
3. Hinge joint
4. Cartilaginous joint

• A. 1,2,3 correct
• B. 1,2 correct
• C. 2,4 correct
• D. 1,3 correct

Answer 1

Answer: (A)

(i) Ball and Socket Joint: Between humerus and pectoral girdle (shoulder Joint). Between femur and ac etabulum of pelvic girdle (hip joint)
• Total 4 ball and socket joint present in human body—2 shoulder joint and 2 hip joint
(ii) Hinge Joint: Knee joint, elbow joint (between humerus and ulna), ankle joint (between foot and leg),interphalangeal joint (between phalanges). Knee joint is the largest synovial joint of the body
(iii) Pivot Joint: Between atlas and axis is called atlanto axial joint. Between radius and ulna (radio-ulnar joint), just below the elbow
(iv) Gliding Joint: Between the carpals (intercarpal joints), Intertarsal joints (between the tarsals of ankle)
(v) Saddle Joint: Between carpal and metacarpal of thumb (carpo-metacarpal joint of thumb)
(vi) Condyloid or ellipsoid Joint: Joint between the met acarpal and phalanges (metacarpophalangeal joint) of the fingers $(2^{nd}$ answer- Hinge) Radiocarpal joint