Question

Hey help me
what are the joints? what are the major category of joints? give example and explain it

Answer 1

A joint or articulation (or articular surface) is the connection made between bones in the body which link the skeletal system into a functional whole. They are constructed to allow for different degrees and types of movement. Some joints, such as the knee, elbow, and shoulder, are self-lubricating, almost frictionless, and are able to withstand compression and maintain heavy loads while still executing smooth and precise movements. Other joints such as suturesbetween the bones of the skull permit very little movement (only during birth) in order to protect the brain and the sense organs. The connection between a tooth and the jawbone is also called a joint, and is described as a fibrous joint known as a gomphosis. Joints are classified both structurally and functionally.

Answer 2

joints are the places where two bones meet
1 ball and socket joint -shoulder
2 hinge joint- elbow
3 pivot joint - hip region
4 gliding joint - knees