Nervous system is the most important organization which control and integrates the different body functions and maintains the constancy of internal environment despite of extreme change in external environment.
#Joint :
Union of two or more bones bind together with binding materials called joint.
Joints are classified in to three main types.
*Fibrous joints: Heaving fibrous tissue in between the bones is called fibrous joints. there is no movement in this type of joints. Ex: sutures (joints between the skull bones)
* cartilaginous joints : Heaving cartilage in between the bones is called cartilaginous joints. there are limited movements in this type of bones. Ex: symphonic pubis, inter vertebral joints.
*Synovial joint : Having synovial fluid in the joint space is called synovial joint. there are verities of movements in these types of joints. Ex: Hip joint, elbow join.
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