Why do we need Blood?
You might have heard that blood flows inside of something called blood vessels in your body. These are small tubes in your body. These are small tubes in your body. You might even be able to see some of them from the outside. All of these blood vessels in your body connect to the heart. One set of vessels, the arteries, carries blood away from the heart out toward all the different parts of your body. Down to your feet, up to your head, out to your hands to all of your muscles, then another set of vessels.
Veins
The veins turn around and take that blood back toward the heart. In a way, It is a lot like a race track, with blood going out one way, circling, and coming back again. Then, starting over. But why? Why would all these vessels take blood away from the heart towards all the different parts of your body? Then turn around and take it all back to the heart again. What do you think blood does for our body?
Before I say anything more, what ideas do you have?
What might blood do for our body?
Even though Blood Vessels are found throughout your body, scientists discovered that many little blood vessels connect to the small intestine by studying the inside of the body. That's the tube that food moves through after going through your stomach. It turns out that as your food gets broken down into tiny microscopic nutrients as it's traveling through your stomach and your small intestine, those nutrients get soaked up or absorbed into your blood vessels that connect to your small intestine. This is one super important thing that blood does for our body. It carries all the nutrients from the food you have eaten from your intestine away towards all the different parts of your body that need those nutrients.
Blood disorders
Before we study blood disorders, we must know the composition of blood in a healthy individual. Blood is a body fluid in humans and other animals that delivers necessary nutrients and oxygen to the cells. Invertebrates, it is composed of blood cell, suspended in blood plasma. The blood cells are mainly Red Blood cells are called RBCs or Erythrocytes. White Blood cells are also called WBCs or leukocytes and Platelets. Plasma which constitutes 55 percent of blood fluid, is mostly water. 92 percentage by volume contains dissipated proteins, glucose, mineral, ions, hormones, and Carbon dioxide. All the blood cells families work together and maintain your body so that you are healthy and strong. Red blood cells transport oxygen to your body's organs and tissues. White blood cells help your body fight infections. Platelets are tiny molecules that stick up together and build a clot on bleeding wounds. All three cell types are formed in the bone marrow, the soft tissue inside your bones.
Your body needs millions of blood cells produced by the bone marrow to carry out vital functions. But sometimes, bone marrow cannot work properly due to certain factors resulting in blood cell disorders. A blood cell disorder is a condition in which there's a problem with your red blood cells, white blood cells, or the smaller circulating cells called platelets. Blood cell disorders impair the formation and function of one or more of these types of blood cells.
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