Online Shiksha

By Savita S. More

Class 7 Science Skeleton Joints and Muscles

f) What would happen if there were no joints in our fingers ?

f) If there were no joints in our fingers, we would not be able to bend them. Our fingers would be rigid, limiting our ability to perform various tasks that require dexterity and fine motor skills.

 

g) What is the difference between bone and Cartilage ?

g) The difference between bone and cartilage:

  • Bone is hard and rigid, providing structural support and protection.
  • Cartilage is softer and more flexible, providing support in areas that need flexibility, like the ears and nose.

Additional Question and Answers

Which bones form the cage protecting the lungs and heart in the chest?

The sternum (central bone in the front of the chest) and ribs (connecting the sternum to the vertebrae) form the cage protecting the lungs and heart in the chest.

 

How many bones are there in the pelvic girdle, and where is it attached?

The pelvic girdle consists of two bones, one on each side. It is attached to the backbone and the thigh bone.

 

What is the longest and strongest bone in the human body?

The thigh bone (femur) is the longest and strongest bone in the human body.

 

What are joints, and why are they important?

Joints are the places where bones are joined together. They are important because they enable movement in different parts of the body.

 

What is the role of cartilage in the body?

Cartilage is soft and flexible. It provides support and is found in the ears, nose, between vertebrae, in the backbone, and between ribs and the chest bone.

 

 

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