Question

Which of the following type of skeletal joint is not present in our hind limbs? a) hinge joint b) ball and socket joint c) pivotal joint d) gliding joint

Answer 1

The correct option is C

Explanation of the correct answer:

1. In pivotal joint one bone has tapped into the other in such a way that full rotation is not possible.
2. This joint aid in sideways and back-forth movement.
3. An example of a pivotal joint in the neck.

Explanation of the incorrect answers:

Option A:

1. Hinge joints are like door hinges, where only back and forth movement is possible.
2. Example of hinge joints is the ankle, elbows, and knee joints.
3. Therefore, in the hind limbs these are present in the knees and ankles.

Option B:

1. In ball and socket joint, one bone is hooked into the hollow space of another bone. This type of joint helps in rotatory movement.
2. An example ball and socket joint are the shoulders.
3. This is also found in the hip, where the round head of the femur (ball) rests in the cup-like acetabulum (socket) of the pelvis.

Option D:

1. Gliding joints are a common type of synovial joint.
2. It is also known as a plane or planar joint.
3. This joint permit two or more round or flat bones to move freely together without any rubbing or crushing of bones.
4. This joint is mainly found in those regions where the two bones meet and glide on one another in any of the directions.
5. The lower leg to the ankle joint and the forearm to wrist joint are the two main examples of gliding joints.

Final answer: Pivotal joint is not present in our hind limbs.