Blood Definition Composition Functions Britannica Our blood contains various cells that maintain, not only the distribution of oxygen to every part of our body but also the action of the immune system. the w. Functions of blood. the primary function of blood is to deliver oxygen and nutrients to, and remove wastes from, the body cells; but that is only the beginning of the story. the specific functions of blood also include defense, and maintenance of homeostasis, such as distributing heat where it is needed.
Learn All About Blood Anatomy Physiology Composition Function Blood makes up about 8% of the human body weight. it contains erythrocytes, leucocytes, thrombocytes (platelets) and plasma. the volume percentage of all blood cells in the whole blood is about 45% of adults (hematocrit). the rest consists of liquid plasma (e.g. water, plasma proteins, electrolytes etc.). the blood is composed of:. Summary. the components of blood include plasma, platelets, and red and white blood cells that circulate through the body. blood supplies essential substances, such as sugars and oxygen, to cells. Blood is composed of plasma, platelets, leukocytes (white blood cells) and erythrocytes [3]. the adult human has from 4 to 5 litres of blood formed of cells and plasma circulating the body in vessels [4] [5] plasma forms about 55% of the total blood volume. the other 45% comprises of a variety of different forms of cells [6]. Blood is therefore somewhat more basic (alkaline) on a chemical scale than pure water, which has a ph of 7.0. blood contains numerous buffers that actually help to regulate ph. blood constitutes approximately 8 percent of adult body weight. adult males typically average about 5 to 6 liters of blood.
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