The components of plasma and their function

Plasma is the liquid component of blood, in which the red blood cells, white blood cells and platelets are suspended. It contributes more than half of the bloods volumes and consists mostly of water that contains dissolved salts and proteins.
Proteins in plasma include antibodies which defends our bodies from viruses and clotting factors which controls bleeding.
Plasmas have other functions, it acts as a reservoir, it absorbs the excess water from our bodies tissues and when the body tissues need additional water it gets it from the plasma. Plasma also prevents our blood vessels from collapsing and clogging and it helps maintain our blood pressure and circulation throughout the body. This also regulates our body temperature by carrying heat generated in core body tissues through areas that lose heat more rapidly.
Red blood cells make up about 40% of blood volume, they contain hemoglobin which gives the red colour and it carries oxygen from the lungs and delivers it to the body tissues. Oxygen is used to produce energy that the body needs which leaves carbon dioxide to be rid of. Red blood cells carry the carbon dioxide back to the lungs to then get rid of it by breathing it out. If you have low red blood cells then fatigue will kick in and you will become more tired. When you have too many red blood cells your blood becomes thick and can cause clotting which increases the risk of heart attacks and strokes.
We have a lot less white blood cells than red with the ratio of about 1 to every 600-700 red blood cells. White blood cells main function is to defend our bodies against infection. There are five main types of white blood cells. Neutrophilis helps protect our bodies against infections by killing bacteria and fungi. Lymphocytes protect against viral infections and can detect and destroy some cancer cells. Monocytes ingest dead or damaged cells. Eosinophils kills parasites, destroys cancer cells and are involved in allergic responses along with basophils. White blood cells act like an army, when a white cell finds an infection it releases a substance to attract more white blood cells.
Platelets are particles which are smaller than red and white blood cells. The ratio of platelets is 1 to every 20 red blood cells. They are like a plug, they gather at a bleeding site and they clump together to help seal a blood vessel. They also release a substance that help promote further clotting. When platelet numbers are low, bruising and abnormal bleeding becomes more likely. When there are too many platelets, blood clots excessively which would cause a stroke or heart attack.