BLOOOOOOOOOOOD!!!!!!!!!!!!!!!!!!!!!!!!!

Blooooooooooooood scary right I hate giving blooooooooooood it hurts so much and i just hate needles. But we need blood to keep us alive and we need to give blood so we can keep other people alive. Every two Seconds someone in the U.S. needs blood and 38,000 blood donations are needed every day. There are different types of blood there is A+, A-, B+, B-, AB+, AB-,  O+, O-. Yea there is alot of different types of blood. But only some types of blood will work with other blood types like AB can only donate to AB but can receive from AB, A, B, O. And its different for the different types of blood. But if you are diabetic you can't donate blood. But if you keep your sugar level controlled then you can donate blood.

In the United States O+ blood is the most common type of blood 38% of people have O+. AB- is the least common in USA only 1% of people have AB-.

Now on to red blood cells in one drop of blood there are millions of these. Red blood cells are constantly traveling through your body delivering oxygen and removing waste. If they weren't, your body would slowly die.Red blood cells are red only because they contain a protein called hemoglobin which is red. Hemoglobin contains the element Iron, which makes it an great for transporting oxygen and carbon dioxide. As blood passes through the lungs, oxygen molecules attach to the hemoglobin. As the blood passes through the body's tissue, the hemoglobin releases the oxygen to the cells. The empty hemoglobin molecules then bond with the tissue's carbon dioxide or other waste gases, transporting it away.

Hearts

Today we will be talking about hearts usually when you think of hearts you think of love and Valentines Day. When really the heart has nothing to do with emotion.


It sends blood throughout your body. The heart has a big job. Every time your heart beats its sending blood throughout your body. Your heart beats 72 times a minute 100,000 times a day 3,600,000 times a year and 2,500,000,000(2.5 billion) times in a lifetime. And pumps 2,000 gallons of blood trough 60,000 miles of blood vessels each day.