Science and Elementary Technology

Skeleton supports our body.It is made up of bones.

 Without skeleton, we would not be able to stand up.

Skeleton gives shape and support to our body. 

A skeleton comprises skull, arms and legs. 

Each of the major parts consists of some small bones.

1. Press the top of your forehead.

 2. Do you feel hard or soft? 

3. What do you think makes your forehead harder ?

Do these review exercises in your exercise book.

1. Our body is supported by a framework of bones called ............... . 

 (a) skeleton                    (b) tissue

 (c) muscle                       (d) none of these 

 2. ………… encloses the brain. 

 (a) Pelvis                (b) Skull 

  (c) Rib                     (d) None of these 

 3. ………… is the lower part of the trunk. 

 (a) Rib                    (b) Spine

 (c) Pelvis                (d) None of these 

 4. A break or crack in the bone is called ………… . 

 (a) disease         (b) fracture 

 (c) deformity    (d) none of these 

 5. When the fracture punctures the skin, it is called ………… . 

 (a) open fracture            (b) closed fracture

 (c) deformity                     (d) none of these 

 6. ………… is the bone disease caused due to lack of Vitamin D. 

 (a) Scoliosis         (b) Bone cancers 

 (c) Rickets              (d) None of these

1. Skeleton gives shape and support to our body. 

 2. Pelvis is the hardest bone in our body.

 3. The legs are called forelimbs. 

 4. Fracture is the break or crack in the bone.

5. Kyphosis is characterised by an abnormally rounded upper back.

1. What is skeleton? 

 2. Which part of the skeleton protects the brain?

 3. List major bones of the skull. 

 4. List major bones of the trunk.

5. List major bones of the legs.

6. Name the bone found in the upper part of the leg.

 7. List major bones of the arms. 

 8. Name the bone found in the upper arm.

 9. List at least three functions of the skeletal system. 

 10. What is fracture?

 11. What are the two main types of bone fractures? 

 12. Name some common bone diseases and deformation of vertebral column.

Across

 2. This is the bony framework that encloses our brain. 

 3. This is a break or crack in the bone. 

Down

1. This is the part of the body to which the head and limbs are attached.

2. This is the framework of bones that supports our boy.