What are the main components of blood?

Blood is a very important connective tissue and has two main components which are:

i) Plasma: It is the fluid part which is about 55% of the total blood. It is a straw colored liquid, viscous in nature. Plasma comprises of about 90-92% of water and 6-8% proteins.

ii) Formed elements: Blood cells/ corpuscles all the formed elements constitutes about 45% of the total blood. It include the red blood cells (erythrocytes), white blood cells (leucocytes) and the platelets (thrombocytes). Out of these platelets are not the proper cells but the cell fragments which play a major role in the process of blood clotting.