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biological world and the human body's systems - Coggle Diagram

- - - - pulmonary vein pump oxygenated blood into the body from the lungs on the right side of the heart
        
        capillaries are one cell thick because they carry oxygenated blood
        
        blood is as follows: artery, inside is red blood cells, plasma, platelets, and white blood cells
        
        red blood cells: transport oxygen using haemoglobin. white blood cells: fight disease and bacteria with antibodies. platelets: parts of other cells. plasma: transports red and white blood cells and platelets
- - - - physical digestion: breakdown of food through teeth and chewing
        
        digestion: the breakdown of food through physical and chemical means so that the nutrients can be used by the body
        
        food chewed by teeth (incisors, canines, pre molars, molars), swallowed and carried through oesophagus (peristalsis), goes to stomach where food is broken down more by HCL acid, then sent to small intestine and food is mixed with enzymes and then sent to large intestines and water is absorbed and then sent to rectum and waste is ejected through anus
- - - - exhale: diaphragm rises, ribs contract, air leaves lungs
        
        we breathe to bring oxygen into our bloodstream to be used by the body so that we can function (keeps our brain alive, so it can send signals to the rest of our body)