Library · Anatomy
Hematologic and Immune System
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The hematologic and immune system brings together structures spread throughout the body. Picture a network rather than a single organ: it includes the blood, the bone marrow where blood cells form, and several places where immune cells mature or gather.
Bone marrow and the thymus are central sites of cell formation and maturation. Lymph nodes, the spleen, and mucosal tissues are peripheral sites where immune cells organize their responses.
In brief
The hematologic and immune system is not a single organ. It includes the blood, the sites where blood cells are formed, and the tissues where immune cells mature and act.
Bone marrow and the thymus are central lymphoid organs. Lymph nodes, the spleen, and mucosal tissues are peripheral organs where immune responses are organized. The system's components are therefore distributed across different sites in the body.
Sources (3)
- National Center for Biotechnology InformationPhysiology, Blood PlasmaPublished
- National Cancer InstituteDefinition of bone marrow
- National Center for Biotechnology InformationImmunology OverviewPublished
This page explains the topic in general terms; it does not tell anyone what treatment to follow.
Updated