Class 6 Science Chapter 5 Extra Question Answers - Body Movements

Extra Questions

Q1: What is main function of the skeleton system?

Functions of the skeletal system:

• It gives shape and provides supports to the body.
• It forms the framework of the body.
• It protects some internal organs.

Q2: Name the various organs of the skeletal system.

Various organs of the skeletal system are: skull, vertebral column, rib cage, bones in arms and legs, shoulder bone and hip bone.

Q3: Give an example of pivot joint in the human body.

The joint where our neck joins the head is a pivotal joint

Q4: What is slithering movement?

Movement of a snake is called slithering movement.

Q5: How many vertebrae are found in the human backbone?

There are 33 vertebrae in the human backbone.

Q7: How does a snake move?

A snakes moves by making loops on its sides.

Movement of Snake

Q8: How does a fish swim in water?

When a fish swims; its front part curves to one side and the tail part stays in the opposite direction. In the next move, the front part curves to the opposite side and the tail part also changes its position to another side. The tail fin helps in changing direction.

Q9: How does the snail move?

 A snail moves using its muscular foot.

Q10: How many bones are found in the human skeleton system?

There are 206 bones in the human skeleton.

MCQs

The skeletal system is primarily made up of bones and cartilages. 

Muscles and nerves are part of different systems in the body.

A snail has a hard outer shell for protection but does not have a skeleton made of bones. Instead, it has a soft, flexible body inside the shell.

Tail fins help fish steer and maintain their direction while swimming. They provide balance and help in propelling the fish forward.

The ball and socket joint allows for rotational movement in all directions, such as in the shoulder and hip joints

The shoulder does not have a hinge joint; it has a ball and socket joint that allows for rotational movement in multiple directions. The jaw, elbow, and knee all have hinge joints, which permit movement in one direction, like bending and straightening.

Muscular tissue is responsible for movement in the body. It contracts and relaxes to enable movement of limbs and other body parts. 

 Cartilage is found in multiple parts of the body. It forms the structure of the outer parts of the ear, is present at the end of the nose, and also makes up the discs between the vertebrae of the backbone. Thus, all the listed locations are examples where cartilage is present.

 Earthworms do not have bones; they have a hydrostatic skeleton. Tigers, fish, and birds all have bony skeletons.

Snails move using a single large, disc-shaped muscular foot. This foot helps them glide along surfaces.