Muhammad SaeedScience News Article December 12 2017 In the article I read Explainer: What’s actually in our blood? by Denese Marks, The Conversation it talks about blood in the human body and what’s inside of it. First of all blood is a vitally important thing in our body as it transports oxygen from the lungs to all other tissues, lungs, and other cells that need it. Blood also removes waste product by sending it to the kidneys or liver where it is removed by the body. The blood consists of about 45 percent of different types of cells and 55 percent of it is plasma which is a yellow fluid. However there isn’t just one blood cell there are usually four which are red blood cells, white blood cells, and platelets which are produced in the bone marrow. Red blood cells are essential for transporting oxygen around the body. They are very small donut shaped cells and have a lifespan of about 120 days. Next, comes platelets which are extremely small versions of a larger cell called megakaryocyte. Its job is to go to the aid of damaged body tissue. They are constantly being produced because they only have a lifespan of about 10 days. Finally, comes white blood cells. They are apart of the immune system and the job of them is to kill harmful viruses and bacteria by “engulfing and ingesting them”. However some people don’t have enough of one or more of these types of blood. Then they need blood transfusions. In most countries willing donors donate their blood and blood is screened for infectious diseases. The, blood is then classified into red blood cells, palets, and white blood cells. They are then shipped to hospitals so patients can use them. This article is relevant to me for two reasons. One I wish to become a doctor when I am older and this article gave me information on blood and types of blood. Some of the different types of blood are red blood cells, white blood cells, and planets. This made me even more interested the human body and blood in general maybe even sparking my career as a doctor. Secondly, I have an aunt who has heart problems and needs a blood transfusion and this is helpful because it educated me about blood transfusions and how they classify it. First of all willing donors donate the blood to people who need it, then it is screened for disease such as HIV. FInally, it is transported to hospitals where doctors transfuse it to the patient.