RBSE Class 6 Science Notes Chapter 8 Body Movement

These comprehensive RBSE Class 6 Science Notes Chapter 8 Body Movement will give a brief overview of all the concepts.

RBSE Class 6 Science Chapter 8 Notes Body Movement

→ Walk, run, fly, jump, creep, crawl, slither and swim - these are only a few of the ways in which animals move from one place to another.

→ We are able to bend or rotate our body in places where two parts of the body seems to be joined together, like - elbow, shoulder or neck. These places are called joints.

→ There are different types of joints in our body to help us carry out different movements and activities. These are ball and socket joints, pivotal joint, hinge joints and fixed joints. 

→ The human skeleton comprises the skull, the backbone, ribs and the breast bone, shoulder and hip bones and the bones of hands and legs.

→ The X-ray shows the shapes of the bones in our bodies.

→ The backbone consists of 33 vertebrae.

→ The skull is made up of many bones joined together. It encloses and protects a very important part of the body, the brain.

→ Our skeleton is made up of many bones (206 in adult and 305 bones at birth), joints and cartilage. It gives the frame and shape to the body and helps in movement. It protects the inner organs.

→ The bones are moved by alternate contractions and relaxations of two sets of muscles.

→ Earthworms move by alternate extension and contraction of the body using muscles. Tiny bristles on the underside of the body help in gripping the ground.

→ Snails move with the help of a muscular foot.

→ The body and legs of cockroaches have hard covering forming an outer skeleton. The muscles of the breast connected with three pairs of legs and two pairs of wings help the cockroach to walk and fly.

→ Strong muscles and light bones work together to help the birds fly. They fly by flapping their wings. The breast bones are modified to hold muscles of flight which are used to move the wings up and down.    

→ Fishes swim by forming loops alternately on two sides of the body.

→ Snakes slither on the ground by looping sideways. A large number of bones and associated muscles push the body forward.