Question

Example of an imperfect joint is:
A. Suture
B. Pubic symphysis
C. Elbow joint
D. Ball and socket joint

Answer 1

Hint:
Joint is a junction formed between two bones., connecting these via ligaments. These help in certain types of movements, making our bodies flexible. They also help in some body parts fixated to keep a rigid skeletal framework.

Complete answer:
Suture is a rigid joint formed between two bones. It is made up of collagen/ Sharpey’s fibres. These are usually found in the cranium.
Pubic symphysis is a cartilaginous joint that separates the right and left pelvic bones. In females, it widens to facilitate the smooth delivery of the baby. It is an example of an imperfect joint because it does not have any synovial cavities, nor is it attached to ligaments.
Elbow joint is located amidst the humerus and ulnar. It is a synovial as well as a hinge joint.
Ball and socket joints show the maximum movement out of all the other joints. In this, a spherical structure of a bone glides/moves about a hollow spherical structure of another bone.
Example: Head of the femur fitted into the hollow structure of the acetabulum.
Thus, the correct answer is: Pubic symphysis

Option ‘B’ is correct

Note:
Imperfect joints do not have gaps between joints. Bones, in such cases, overlap too. They restrict movement to a great extent and are also referred to as cartilage joints because bones in such joints are connected by cartilage: fibrous or hyaline and not by the conventional structure, that is, ligaments.