Design or Co-incidence: Circulatory System- Heart ; Blood; Vessels

Whole network of blood vessels consisting of arteries, veins  and capillaries through out body is built in such a delicate manner that it maintains smooth functioning of the inner body parts. Heart is the principal organ which control the blood flow. The texture of the vessels are thicker (arteries) where there is more pressure and thinner (veins) where there is less pressure for smooth flow management that results in efficient energy management while controlling temperature and waste management. Blood is very special kind of material composed  of plasma which is a highly viscous liquid, along with red blood cells, white blood cells, and platelets. Almost 92% of the plasma is water while the rest consists of enzymes, hormones, antibodies, nutrients, gases, salts, proteins and metabolites of various kinds. Because of its particular composition it is able to perform functions of:controlling body temperature, supplying oxygen and nutrients, removing waste, assisting the immune system and transporting hormones. If all these functions are not performed simultaneously that would result in malfunction and collapse. 
"The prevalence of this synchronic circulatory system is a clear proof of well thought out design."
Some Mathematics:
1. Geometric shape of vessels is rounded which is the best for flow.
2. Contains to 7 liters of blood
3. Length of Vessels around 97,000 KM
4. Ratio of Blood: 
                         30% in Arteries
                         05% in Capillaries
                         60% in Veins
5. 4 Chambers of Heart
6. Almost 92% of plasma is water












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