Body Movements

Q1. Fill in the blanks.

                         i.        We are able to bend or rotate our body in places where two parts of our body seem to be joined together. These places are called joints.

                        ii.        We are able to bend or rotate our body only at joints.

                       iii.        Bones and cartilage forms skeleton of human body.

                       iv.        Skeleton gives frame and shape to our body and helps in movement.

                        v.        In a pivotal joint a cylindrical bone rotates in a ring.

                       vi.        X-ray images are used to find out about any possible injuries that might have happened to the bones.

         vii.        Skull protects brain.

         viii.        Our skeleton is made up of many bones, joints and cartilage.

                       ix.        The rounded structure snail carries on its back is called shell.

                        x.        Fins on the body of fish mainly help to keep the balance of their body.

                       xi.        Snakes have a long backbone.

         xii.        Snails move with the help of a muscular foot.

Q2. True/False

                         i.        Bones cannot be bent. True

                        ii.        Hinge Joint allows movement in all directions. False

                       iii.        Elbow has fixed joint. False

                       iv.        Bone in our arm is joined to our shoulder by ball and socket joint. True

                        v.        The joint between the upper jaw and rest of head is moveable. False

                       vi.        Bones in our body forms framework to give shape to our body. This framework is known as skeleton. True

         vii.        Ribs join the chest bone and back bone together to form box called skeleton. False

         viii.        The skull is made of many bones joined together. True

                        ix.        Cartilage is also found in the joints of the body. True

                         x.        Cockroaches have three pair of wings attached to breast. False

                        xi.        The snake moves forward very fast and not in a straight line. True

Q3. Write name of two animals which can move without bones.

Ans. Snail and Earthworm

 
Q4. Write three animals that have streamlined body.

Ans. Fish, Whale and Birds

Q5. Name one animal which can walk and climb as well as fly in the air.

Ans. Cockroaches               

 
Q6. Name two birds which can swim in water.

Ans. Ducks and Swans

Q7. Name an aquatic animal whose skeleton is made entirely of cartilages?

Ans. Shark

 
Q8. Where is cartilage found?

Ans. Cartilage is found in joints and ear.

 
Q9. What is cavity in bones?

Ans. Cavity is the hollow space in the bones.

Q10. Which organs are protected by the rib cage?

Ans. Heart and lungs are protected by the rib cage.

Q11. What are ribs?

Ans. The ribs are thin, flat, curved bones that form the rib cage.

Q12. What is skull?

Ans. The skull is made up of many bones joined together.

Q13. Name the organ which help cockroach in walking.

Ans. Cockroaches have three pairs of legs. These help in walking.