Question 9 of New Pathways for Class 7 asks about the different types of joints found in our body. Here is a detailed answer to the question:

Types of Joints:

Joints are the areas where two or more bones meet. There are three main types of joints found in our body:

1. Fibrous Joints:

Fibrous joints are the joints where bones are held together by tough connective tissue. These joints do not allow any movement and provide stability to the body. Examples of fibrous joints include the joints between the bones of the skull and the teeth in their sockets.

2. Cartilaginous Joints:

Cartilaginous joints are the joints where bones are held together by cartilage. These joints allow limited movement and absorb shock. Examples of cartilaginous joints include the joints between the vertebrae in the spine and the joints between the ribs and the sternum.

3. Synovial Joints:

Synovial joints are the joints where bones are held together by a joint capsule and lubricated by synovial fluid. These joints allow a wide range of movements and are the most common type of joints found in our body. Examples of synovial joints include the joints in the shoulder, elbow, hip, and knee.

Functions of Joints:

Joints play an important role in the movement and stability of our body. Here are some of the functions of joints:

1. Movement:

Joints allow us to move our body and perform various activities like walking, running, jumping, and dancing.

2. Support:

Joints provide support to our body and help us maintain our posture.

3. Protection:

Joints protect our vital organs like the brain, heart, and lungs by cushioning them from shocks and impacts.

In conclusion, our body has three main types of joints: fibrous, cartilaginous, and synovial. Each type of joint has its own structure and function. Joints play an important role in the movement and stability of our body and protect our vital organs.