martes, 17 de marzo de 2015

Alphabet Songs (Only first)

Human Body( Only first)

Human Body – 


Its Function and System  

Your body is more amazing than any machine on earth. Your brain works like a complex computer, telling all the other systems in your body what to do. Your circulatory system includes your heart and blood. It delivers nutrients to your organs and keeps things clean. Your skin protects your body and keeps you from drying out. Bones give your body structure and strength. Muscles move your body. Your lungs take oxygen from the air for your body.

Fun Facts about the Body for Kids

  • You have more than 600 muscles and 200 bones in your body.
  • Your body needs food, water and air. Food gives your body energy. Water keeps your body moist. Air delivers oxygen to your body.
  • Your brain sends tiny electrical impulses to your nerves. Your nerves tell your body when and how to move.
  • Your brain has millions of nerves that connect to one another.
  • You grow more during the first two years of life than during the rest of your life.


jueves, 5 de marzo de 2015

Parts of the respiratory system ( only third)

Lungs:

The lungs are the main organs of the respiratory system. In the lungs oxygen is taken into the body and carbon dioxide is breathed out. The red blood cells are responsible for picking up the oxygen in the lungs and carrying the oxygen to all the body cells that need it. The red blood cells drop off the oxygen to the body cells, then pick up the carbon dioxide which is a waste gas product produced by our cells. The red blood cells transport the carbon dioxide back to the lungs and we breathe it out when we exhale.


Trachea:
The 
trachea (TRAY-kee-uh} is sometimes called the windpipe. The trachea filters the air we breathe and branches into the bronchi.
Bronchi: 
The bronchi (BRAHN-ky) are two air tubes that branch off of the trachea and carry air directly into the lungs.
        Diaphragm:
Breathing starts with a dome-shaped muscle at the bottom of the lungs called the diaphragm (DY-uh-fram). When you breathe in, the diaphragm contracts. When it contracts it flattens out and pulls downward. This movement enlarges the space that the lungs are in. This larger space pulls air into the lungs. When you breathe out, the diaphragm expands reducing the amount of space for the lungs and forcing air out. The diaphragm is the main muscle used in breathing.