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 wa...