My Journey Through the Human Body My name is crimson; I am a red blood cell. I am a dazzling ruby red wile (hence my name) with a diminished atomic number 18a of inner pallor and I am genuinely small: merely about 6 µm in diameter. I get my red alter from a protein chemical called hemoglobin, which is bright red. Hemoglobin not only gives me my beautiful color, it as well contains the element iron, which makes it a good vehicle for transporting oxygen and carbon dioxide. I have a very important aim in the circulatory system of your body. Actually, it is believably the most important of all the blood cells. I need oxygen to all parts of your body and tissues and I also return carbon dioxide from your tissues to your lungs.
So I bet you are wondering how I do this very important role! I enter the blood vessels through the hearts main arteria called the aorta making sure that I am full of oxygen. The forceful contraction of your hearts left ventricle forces me into your aorta which then branches into many littler arteries, which run throughout your body. The inside layer of your artery is very smooth, allowing me to merge quickly. The outside layer of your artery is very strong, allowing me to flow forcefully.
I enter the capillaries full of oxygen, where the oxygen and nutrients are released. The deplete products are collected and the waste-rich blood flows into your veins in order to impart back to your heart and then allow the exchange of gases in your lungs. I eventually pass through your kidneys, which filter practically of the waste from the blood. I also pass through your small intestine. From the small intestine I meet with many of my family and friends that...
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