rash that moves to different parts of the body

Rash that moves to different parts of the body full#

Lymph nodes tend to be most prevalent in areas near body openings, such as the digestive tract and the genital region, because this is where pathogens most often enter the body. Numerous unnamed lymph nodes also exist throughout the body in fact, virtually every corner of our body has some group of lymph nodes associated with it. For example, many people are familiar with tonsils and adenoids in the neck, but may not be aware of Peyer’s patches, which are lymph nodes that line the intestine. These nodes are located strategically throughout the body.

Rash that moves to different parts of the body full#

Lymph nodes are tissues full of immune cells. The thymus is located just above the heart behind the sternum, or breastbone. Cells that eventually become T cells travel from the bone marrow to the thymus by way of our bloodstream where they mature (hence the name “T cell”). B cells mature in the bone marrow (hence the name “B cell”). Two types of lymphocytes comprise the adaptive immune system - B cells and T cells.

Some of the stem cells will become a type of immune system cell called a lymphocyte. As a result, in the same way that the red blood cells in our blood are replenished after an injury or blood donation, our immune system cells are constantly replenished. The cell generation and differentiation process occurs every day for as long as we live. These stem cells later develop into specific cell types, including red blood cells, platelets (important for blood clotting), and white blood cells (important for immune responses). All cells of the immune system are created in the bone marrow from a common type of starting cell, called a stem cell. If the immune system is a police force, the bone marrow is the police academy because this is where the different types of immune system cells are created. Organs and tissues important to the proper functioning of the immune system include the thymus and bone marrow, lymph nodes and vessels, spleen, and skin.