Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Circulatory System

Science Grade 7

plasma liquid part of the blood
red blood cells carry oxygen from lungs to the body's cells
Bone marrow Blood cells are produced here
white blood cells part of the blood that helps fight disease
platelets part of the blood that helps form blood clots
universal donor Type O
fibrin enzyme released by platelets to help form blood clots
valves part of the veins that prevent blood backflow
diffusion The process by which materials are exchanged between the blood and the body cells
capillaries blood vessels that are only one cell thick
blood pressure a force exerted on the walls of the blood vessels
arteries blood vessels that carry blood AWAY from the heart
veins blood vessels that RETURN blood to the heart
hemoglobin part of red blood cells that attaches to oxygen
Created by: mrsrooney