what r the different types of movable joints ? give examples for each and the type of movement shown by each?
Answers
Explanation:
Joints
A joint, also known as an articulation or articular surface, is a connection that occurs between bones in the skeletal system. Joints provide the means for movement. The type and characteristics of a given joint determine its degree and type of movement. Joints can be classified based on structure and function.
The joints help us to rotate our shoulder, bend our knees and elbows, swivel our neck and more. By definition, a joint is a point where two bones meet to provide a framework that permits movement. Bones are attached to one another by tissues called ligaments. Muscles are attached to bones through tendons.
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Classification of Joints
There are two different types of joints- Structural and Functional classification of joints.
Structural classification of joints.
According to the structural classification of joints, they are divided into 3 types, namely:
Fibrous Joints
Fixed joints, also called immovable joints, are found where bones are not flexible. In such joints, bones have been fused together in such a way that they are fixed to that part, most commonly to create a structure. A prominent example of a fixed joint is the skull, which is made up of a number of fused bones.
Other examples include the upper jaw, rib cage, backbone, and pelvic bone, etc.
Cartilaginous Joints
Cartilaginous joints are partly movable joints comprising of symphysis or synchondrosis joints. These joints occur only in those regions where the connection between the articulating bones is made up of cartilage. Synchondrosis are temporary cartilaginous joints which are present in young children and last until the end of their puberty.
For example, the epiphyseal plates present at each end of the long bones is responsible for bone growth in children. The symphysis or the secondary cartilaginous joints (the place where bones join) is permanent. Examples include the pubic symphysis. Other examples of cartilaginous types of joints include the spinal column and the ribcage.
Synovial Joints
The synovial joints are the most common type of joint because this joint helps us to perform a wide range of motion such as walking, running, typing and more. Synovial joints are flexible, movable, can slide over one another, rotatable and so on. These joints are found in our shoulder joint, neck joint, knee joint, wrist joint, etc.
Functional classification of joints.
Functional classification of joints is based on the type and degree of movement permitted. Based on the type and degree of movement permitted. There are six types of freely movable joint and are mentioned below with the examples:
Explanation:A joint is the part of the body where two or more bones meet to allow movement. Generally speaking, the greater the range of movement, the higher the risk of injury because the strength of the joint is reduced. The six types of freely movable joint include ball and socket, saddle, hinge, condyloid, pivot and gliding