Bones
Vessels and others
The solid part of blood that is made of living cells is referred to as formed elements. The liquid part of blood is called plasma.
Blood is quite heterogeneous; there is the actual liquid part (plasma) and then various solid or semi-solid parts suspended it in (the blood cells, for example).
The parts of the blood are the formed elements (solid parts) and the plasma (the liquid in which the solid parts are suspended). The formed elements include red blood cells, white blood cells, and platelets.
The solid portion of the blood is mainly made up of red blood cells. There are white blood cells and platelets too.
Blood Cells
Blood has red cells and white cells, but I'm not sure what is meant by 'solid part'.
Blood has red cells and white cells, but I'm not sure what is meant by 'solid part'.
No, platelets are one of the solid components of blood.
There are no "solids" because they're all in solution; the closest you might come is the membranes of the various blood cells, and/or the (temporarily) unconnected fat molecules that are normally fastened to various transport proteins.
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The three solid parts of blood are erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (platelets). Red blood cells transport oxygen to all body parts. White blood cells fight infection. Platelets assist in blood clotting.
Not a "separation", but the blood does clot ... so that both a solid and a liquid phase are there, but they're different from the living solid and liquid parts.