blood red cross

blood red cross - WHAT IS SO WONDERFUL ABOUT BLOOD BLOOD...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: WHAT IS SO WONDERFUL ABOUT BLOOD? BLOOD • Blood flows everywhere through the human body. • We cannot live without it. • The heart pumps blood to all our body cells, supplying them with oxygen and food. • Blood also carries proteins and cell fragments called platelets that let blood clot where there has been an injury. RED BLOOD CELLS • Red blood cells carry oxygen to body tissues and remove carbon dioxide. • They are red because they contain a protein called hemoglobin that is red in color. • Red blood cells are round and thinner in the middle, like a balloon that is partly filled with water. This lets them squeeze through tiny blood vessels without breaking. PLATELETS • If a blood vessel is cut, platelets stick to the edges of the cut and to one another, forming a plug that stops bleeding. • They then release chemicals that react with fibrinogen and other clotting proteins, leading to the formation of a blood clot. • The blood vessel can then heal over the cut area. PLASMA • Plasma is the liquid part of your blood in which red cells and platelets float. • Plasma is mostly water, but the proteins it contains are necessary for life....
View Full Document

This note was uploaded on 11/23/2011 for the course BIO 100 taught by Professor Robinson during the Fall '08 term at BYU.

Page1 / 31

blood red cross - WHAT IS SO WONDERFUL ABOUT BLOOD BLOOD...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online