Question

What are the functions of cartilaginous joints and fibrous joints?

Answer 1

Hint: The region of the body where two or more bones unite to facilitate movement is called a joint. Except for the hyoid bone in the throat, every bone in the body connects to at least one other bone at a joint. The function of a joint determines its shape. Articulation is another name for a joint.

Complete answer:
Joints are the points of the body where two bones join to each other to facilitate movement. There is often a move between them but sometimes there is not. A joint has two main functions: to allow mobility of the skeletal system and to provide a protective enclosure for vital organs.
Classification of Joints: There are two ways of classifying joints.
1. Structural classification
2. Functional classification
Also, according to another classification joints are classified into three structural joints:
1. Fibrous,
2. Cartilaginous, and
3. Synovial.

-Fibrous joints are held together by dense connective tissue, which is mostly collagen. Because they do not move, these joints are often known as fixed or immovable joints. Fibrous joints are joined by fibrous connective tissue and lack a joint cavity. Sutures are fibrous junctions that connect the skull bones.

-Cartilaginous joints are made up of cartilage (fibrocartilage or hyaline). Cartilaginous joints allow more movement between bones than fibrous joints, although they are less flexible than synovial joints. Cartilaginous joints also form the development zones of immature long bones and the spinal column's intervertebral discs.

-Synovial joint - In this joint, there is a fluid-filled cavity called synovial cavity where the two bones are connected. The fluid in the cavity helps in the lubrication of joints and prevents wear and tear of bones due to friction. The two bones at the joint are not directly connected with cartilage or fibrous tissue. This allows the free movement of bones and helps in locomotion. These are the most common types of joints.

Note:
1. Fibrous joints- These joints are also known as immovable joints, and are not flexible. In these joints bones are fused to form a special structure. The most important examples include the skull which is made up of fused bones and has fibrous joints in the form of sutures, rib cage, the pelvic bone are the other examples.
2. Cartilaginous joints- These joints are slightly immovable. These include symphysis or synchondrosis joints. These are found where the connection between articulating surfaces is made as a bone with cartilage