blood plasma and tissue fluid

• Blood is the fluid held in our blood vessels. It consists of a liquid called plasma which contains many blood cells. Plasmna contains dissolved substances such as oxygen, carbon dioxide, minerals, glucose,e amino acids, hormones and plasma proteins. The blood cells include red blood cells (erythrocytes), and white blood cells like leucocytes and fragments of blood cells called platelets
• Tissue fluid is similar to blood plasma. tissue fluid doesn't contain most of the cells found in blood, it doesn't contain plasma proteins. Tissue fluid is formed by plasma leaking from the capillaries, it surrounds the cells in a tissue and supplies them with the oxygen and nutrients required. As blood plasma leaks from the capillary, it carries all the dissolved substance into the tissue fluid, via mass flow rather than diffusion. Waste products from cell metabolism will be carried back to the capillary as some of the tissue fluid returns to the capillary.