happy life

Bllod is a thick, red liquid that carries oxygen and ffod to every part of our body. It also collects waste and takes it to the places that can get rid of it. Special cells in our body fight germs and help to repair our body when we get hurt. Our blood is pumped through our body by our heart. Blood flows into our heart before each beat, when our heart squeezes it out to continue its journey.

Red or Blue?
Red blood cells carry oxygen collected from our lungs to the parts of our body that need it. When they have delivered the oxygen, the cells turn blue. Outside the body, our blood always looks red. beacuse the cells turns red as soon as they touch the oxygen in air.

Heart
Your heart is about the same size as your fist. It is made of strong muscle, which pushes almost 10 pints of blood through our blood vessels every minute.

Arteries
Our arteries are vessels which carry blood away from our heart to the rest of our body.

The veins carry blood back to our heart. Sometimes they show through our skin as bluish lines. We may be able to see them inside our elbow or wrist. Our arteries are deeper down in our body that our veins.

Veins
Our veins are vessels which carry blood back to our heart from every part of our body.

Feel the beat
In some parts of our body, we can feel the arteries that carry our blood beating time with our heart. This is called pulse. QWe can usually feel it inside our wrist or neck. Actually we have lots of pulse in our body…