PATHOLOGY

Detailed explanation-1: -The bone marrow is extremely important to the immune system because all the body’s blood cells (including T and B lymphocytes) originate in the bone marrow. B lymphocytes remain in the marrow to mature, while T lymphocytes travel to the thymus.

Detailed explanation-2: -Your thymus is a small gland in the lymphatic system that makes and trains special white blood cells called T-cells. The T-cells help your immune system fight disease and infection.

Detailed explanation-3: -All cells of the immune system are created in the bone marrow from a common type of starting cell, called a stem cell. 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).

Detailed explanation-4: -The lymphatic system is made up of: lymph nodes (also called lymph glands) – which trap microbes. lymph vessels – tubes that carry lymph, the colourless fluid that bathes your body’s tissues and contains infection-fighting white blood cells. white blood cells (lymphocytes).

Detailed explanation-5: -Both B and T lymphocytes originate in the bone marrow but only B lymphocytes mature there; T lymphocytes migrate to the thymus to undergo their maturation. Thus B lymphocytes are so-called because they are bone marrow derived, and T lymphocytes because they are thymus derived.