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: Cells. Cell fragments. Aqueous solution (plasma).

Components of Blood. Blood is made up of blood cells (also called hematocytes or hematopoietic cells) and plasma. Blood Cells (Hematocytes) These are the cellular components of the blood covering about 45 – 46% of total blood.

This Osmosis High-Yield Note provides an overview of Blood Components and Function essentials. All Osmosis Notes are clearly laid-out and contain striking images, tables, and diagrams to help visual learners understand complex topics quickly and efficiently.

There are many cellular structures in the composition of blood. When a sample of blood is spun in a centrifuge machine, they separate into the following constituents: Plasma, buffy coat and erythrocytes.

Plasma, the liquid component of blood, comprises 55 percent of the total blood volume. Plasma is composed of 90 percent water with antibodies, coagulation factors, and other substances such as electrolytes, lipids, and proteins required for maintaining the body.