White blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages), red blood cells (erythrocytes), and platelets are only a few of the several cell types found in the blood. The arteries and veins in the body carry blood around.
Platelets aid in blood clotting. When an artery or vein ruptures, clotting prevents the blood from leaving the body.
Oxygen is carried by red blood cells. These cells are produced by the body at a pace of 2.4 million per second, and they live for roughly 120 days on average.
White blood cells protect against infection. The immune system depends on these cells, which may be found in a variety of forms and sizes.
Stem cells:
As the body develops, stem cells provide the organism with new cells and replace specialized cells that are lost or destroyed.
They can accomplish this because of two special characteristics they possess: They have the capacity to repeatedly divide to create new cells. They can transform into the different types of cells that make up the body as they divide.
Fat cells:
Adipose tissue is made up of fat cells (also known as adipocytes or adipose cells).
Their primary functions are to store energy as lipids and to form an insulating layer beneath the skin to conserve body heat.
Adipose tissue also serves to insulate, cushion, and protect interior organs.
Skin cells:
Skin cells are the basic building elements of the skin, which is a huge, complex organ that serves as a protective barrier between our insides and the outside world.
The keratinocyte is the most common kind of skin cell, and its major role is to build a robust, waterproof covering against UV radiation, toxic chemicals, and pathogenic agents.
Endothelial cells:
Arterioles and veins are the biggest blood vessels, with a thick, stiff connective tissue wall and several layers of smooth muscle cells.
The endothelium, an extremely thin single sheet of endothelial cells, lines the wall, separated from the surrounding outer layers by a basal lamina.
The quantity of connective tissue and smooth muscle in the vascular wall varies depending on the diameter and function of the vessel, but the endothelium lining is always there.