Explainer: what’s actually in our blood?

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The Conversation – 25th July 2017

By Denese Marks

Blood is vitally important for our body. As it’s pumped around our body through veins and arteries, it transports oxygen from our lungs to all of the other organs, tissues and cells that need it. Blood also removes waste products from our organs and tissues, taking them to the liver and kidneys, where they’re removed from the body.

About 45% of our blood consists of different types of cells and the other 55% is plasma, a pale yellow fluid. Blood transports nutrients, hormones, proteins, vitamins and minerals around our body, suspended in the plasma. They provide energy to our cells and also signal for growth and tissue repair. The average adult has about five litres of blood.

The different types of blood cells include red blood cells, platelets, and white blood cells, and these are produced in the bone marrow, in the centre of our bones. READ MORE AT: https://theconversation.com/explainer-whats-actually-in-our-blood-75066


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