Which joint comes into use most when you do the following activities? Activity Name of the joint (a) Writing (b) Climbing a stair case (c) Jumping (d) Throwing a ball (e) Rotating shoulder while doing exercise (f) Lifting head

Our wrists and ankles have gliding joints. A gliding joint also present between each pair of adjacent vertebrae of the backbone. They help the back to bend, turn and twist. Gliding joint comes into use most when we are writing. The ball-shaped end of one bone fits into the cup-shaped socket of the other bone. This allows maximum movement. Ball and socket joint comes into use most when we are climbing a staircase. Hinge joint is like the hinge of the door and helps the bones to move in one direction. The elbows, knees, fingers and toes have hinge joint. It comes into use most when we are jumping. The shoulder and hip region have the ball and socket joint. They allow movement in all directions. Ball and socket joint comes into use most when we are throwing a ball. Ball and socket joint comes into use most when we are rotating shoulder while doing exercise. This joint helps in the maximum movement of the body. The joint which joins the skull to the backbone is the pivot joint. It enables the head to move up, down and sideways. Activity Name of the joint (a) Writing Gliding joint (b) Climbing a staircase Ball and socket joint (c) Jumping Hinge joint (d) Throwing a ball Ball and socket joint (e) Rotating shoulder while doing exercise Ball and socket joint (f) Lifting head Pivot joint

Below is given a crossword puzzle. Follow the hints and solve the puzzle. Down It controls all the activities of the body. The sense organ helps us to see. This system includes a brain spinal cord and nerves. It is the lower part of the brain. It carries the message from the brain Across 6.These organs connect us to our surroundings. 7. It is the largest part of the brain. 8. This sense organ helps us to taste. 9.The automatic action is controlled by the spinal cord. 10. It connects the brain to the spinal cord.

1. Brain is the centre of our nervous system. It controls all the activities of the body. 2. We have two eyes and it is one of the five sensory organs. It helps us to see. 3. Nervous system coordinates the actions and sensory information to and from different parts of the body. It controls other organ systems and sense organs. It includes brain, spinal cord and nerves. 4. Spinal cord is a long, thin and tubular structure made up of nervous tissue. It is the lower part of the brain. 5. Nerves are the active component of the nervous system. They carry message from the brain. 6. Sense organs connect us to the world outside. We have five sense organs- eyes, ears, nose, tongue and skin. 7. Cerebrum is the principal and most anterior part of the brain. It controls our sense organs and is the centre of intelligence. It is the largest part of the brain. 8. Tongue is the muscular organ in the mouth. It helps us to taste. 9. The automatic action controlled by the spinal cord is reflex action. Blinking of eye is an example of this. 10. Medulla is a long and stem like structure which makes up brainstem. It connects the brain to the spinal cord.