Bone marrow and the immune system

what does bone marrow do Parents can learn about bone marrow and the immune system, preparing for a child’s blood transplant and bone marrow transplant (BMT).


main points

Bone marrow is a spongy tissue inside the bone that produces blood cells. The bone marrow produces red blood cells, platelets and white blood cells. Lymphocytes are produced in the bone marrow and play an important role in the body’s immune system. The bone marrow is the spongy tissue inside our bones. All bones in newborns have active bone marrow, which means that they produce new bone marrow cells. Until your child reaches a young adulthood, the bone marrow inside the bones of the hands, feet, arms and legs stops producing new bone marrow cells. In adults, active bone marrow is found in the bones of the spine, hip and shoulder, ribs, sternum and skull. However, the bone marrow in the spine and hip has the richest source of bone marrow cells.


what does bone marrow do

Our bone marrow produces blood cells, called red blood cells, blood platelets and white blood cells. Inside the bone marrow, blood cells start as young, immature cells called stem cells. When they develop, blood cells do not live in our bodies for a long time. That’s why our bone marrow keeps producing all three types of blood cells to keep us healthy.


 Oxygen and carbon dioxide attach to the iron in hemoglobin, allowing the blood cells to transport oxygen to the body. Red blood cells get rid of the carbon dioxide that leaves your body through the lungs when you exhale.

what does bone marrow do




Platelets are blood cells that help to clot blood (stick together) to stop bleeding in areas of the body that have been cut or wounded.The tiles form a scab that forms on a small piece.



what does bone marrow do in White blood cells function

White blood cells help the body fight infection. There are many different types of white blood cells that include: lymphocytes, neutrophils and monocytes. These white blood cells fight against attackers with bacteria, viruses or fungi to help destroy infection. Each of these cells differs in appearance. Eosinophils and basophils. These white blood cells react to allergens that can attack our bodies.


what does bone marrow do in Immune System

Our immune system protects the body against disease. It kills unwanted microorganisms such as bacteria and viruses that can attack our bodies.



How does our immune system fight infection?

When introduced into the marrow, lymphocytes enter the lymph nodes. Lymphocytes travel between each node via lymphatic channels. Lymphatic channels meet in large channels that empty into the blood vessels. Lymphocytes get into the blood through these channels. There are three main types of lymphocytes that play an important role in B cells in the immune system (B cells).

These cells come from the bone marrow. They form proteins called antibodies that attach to the surface of the microorganisms that cause infection. Basically, they have the shape of Y or T. Each type of antibody reacts to different microorganisms, adhering to molecules called antigens that are on the surface of the microorganism.

what does bone marrow do



It is the binding of the antibody and the antigen that causes B cells to grow and produce more antibodies that fight the infection. T-lymphocytes (T-cells) These cells mature in the thymus, which is a small organ in the upper chest, just after the sternum (sternum). T cells help B cells to produce antibodies against attacking bacteria, viruses or other microorganisms. In contrast to B cells, T cells absorb and destroy pathogens directly after binding to the antigen on the surface of the microorganism. Natural killer (NK) cells. This is a type of lymphocyte that directly attacks cells infected with the virus

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