Educational Website For Kids


The Totally Free Children's Learning Network

Educational Games For Children
Educational Games
Educational Materials For Schools
 
Educational Materials For Homeschoolers

Educational Games For Children

Educational Materials For Schools
 
Educational Materials For Homeschoolers

Educational Games For Children
Educational Worksheets
Educational Materials For Schools
 
Educational Materials For Homeschoolers

Educational Games For Children
  Educational Movies
Educational Materials For Schools
 
Educational Materials For Homeschoolers

Educational Games For Children
  Educational Movies
Educational Materials For Schools
 
Educational Materials For Homeschoolers

Educational Games For Children
 


Return to our Main Educational Website

  Educational Virtual World

Follow The KidsKnowIt Network on Facebook
follow us on twitter
Free Educational Posters
Free Educational Posters


 

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

Biology, The Study of Life On Earth
.
HOME .::. BIOLOGY .::. HUMAN BIOLOGY


ANIMALS .::. BIOLOGY GAMES .::. FORUMS











.:HOME:.
.:BIOLOGY:.
.:HUMAN BIOLOGY:.
.:ANIMALS:.
.:BIOLOGY GAMES:.
.:FORUMS:.

 







 
Educational Websites For Kids
Search The Totally Free Children's Learning Network
Educational Articles




         
Circulatory System
Capillaries  

Just like a city with hallways and roads, your body has blood vessels, arteries and veins that help move things around. Most of the cells inside of your body do not move. If a cell is hungry or needs to get rid of waste, it can’t simply move itself to the part of your body where it needs to go. Instead, your body must bring the food to your cells and take the waste away from them.





Using billions of tiny tubes, your body is constantly pumping blood throughout your body. On the way out, your blood is loaded with the things that your body needs, like food, oxygen, and other chemicals. On the way back, your blood is full of things that the cells of your body need to get rid of, like waste.

 
Capillaries

What color is blood? Well, that depends. Sometimes it is red, and sometimes it is blue. Don’t believe me? Look at your arm. Better yet, look at the arm of one of your parents. Can you see the blue veins? Why are they blue? When blood is full of oxygen it is red, but when it is low on oxygen it turns bluish. Why don’t I ever see blue blood? Because as it leaves your body it quickly turns red as it takes in oxygen.

 

Blood Flow


Last Biology Basics Page Next Biology Basics Page




KidsBiology.com Copyright © 1998- 2017 All Rights Reserved.