Question

Bones are hard structure and cannot be bend but we can still bend our elbow knee etc how is this pssible

Answer 1

we wont bend our bones when we bend our elbow and knee etc

2 bones are connected by ligaments and cartiledges are present at the joints of 2 bones

these joints help u in bending our elbows and knees etc

Ball-and-Socket Joint

ball-and-socket joint as one in which the rounded surface of a bone fits into and moves within a cup-shaped depression. Examples of this type of synovial joint are the hip and shoulder joints. The ball-and-socket joint allows freedom of movement up, down, right, left and in a full 360-degree rotation.

Hinged Joint

Hinged joints include the elbow, fingers, toes and knee. Movement occurs in only one direction or one plane. hinged joint in the knee is unusual because it allows the knee to swivel, turning the foot from side to side.

Gliding Joint

Gliding joints allow two or more flat or slightly rounded bones to move easily together without friction or grinding. Examples of gliding joints include the forearm to wrist joint and the lower leg to ankle joint.

Pivot Joint

A pivot joint is a synovial joint designed with one end fitting like a cylinder inside a ring. Pivot joints at the base of the skull allow the head to rotate. Other pivot points allow the rotation of the palm.