What are joints Explain ball and socket joint with a neat labelled diagram
Answers
Answer:
Joint: The region at which two or more bones of skeleton come in contact and move freely is called a joint.
Ball and socket Joint: In such joints, one of the bones form a cup-like or socket-like structure where the other forms a ball-like structure that fits in the cup. The bone has a ball or head that can move freely in the joint in a number of directions. Example of such joints is shoulder and hip joints.
A cartilaginous layer known as the articular cartilage is present on the head of both bones. The cavity present between the heads of both the bones is called the synovial cavity which is filled with synovial fluid. A large number of muscle fibers or ligaments are present which keep these bones in their position.
These joints help in stretching or extending, folding or flexing addiction (towards midline) abduction (away from the midline), and rotation of the limb.
Answer:
A joint is the part of the body where two or more bones meet to allow movement. Every bone in the body – except for the hyoid bone in the throat – meets up with at least one other bone at a joint. The shape of a joint depends on its function. A joint is also known as an articulation.
Ball-and-socket joint, also called spheroidal joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.
