The erythrocyte, commonly known as a red blood cell (or RBC), is by far the most common formed element: A single drop of blood contains millions of erythrocytes and just thousands of leukocytes. Speci...The erythrocyte, commonly known as a red blood cell (or RBC), is by far the most common formed element: A single drop of blood contains millions of erythrocytes and just thousands of leukocytes. Specifically, males have about 5.4 million erythrocytes per microliter (µL) of blood, and females have approximately 4.8 million per µL. In fact, erythrocytes are estimated to make up about 25 percent of the total cells in the body.
Excretion is the process of removing wastes and excess water from the body. It is an essential process in all living things. It is one of the major ways the human body maintains homeostasis. It also h...Excretion is the process of removing wastes and excess water from the body. It is an essential process in all living things. It is one of the major ways the human body maintains homeostasis. It also helps prevent damage to the body. Wastes include by-products of metabolism, some of which are toxic, and other non-useful materials, such as used up and broken down components.
