Bone marrow

Lymphocytes are all produced in the bone marrow, but their education and maturation happens in the thymus

Red marrow

Yellow marrow

Responsible for producing platelets, lymphocytes, erythrocytes, granulocytes, and monocytes.

Highly vascular

Hematopoietically active (produces blood cells)

Rich in adipocytes (Fat rich)

Significantly less haematopoeitic centers (most are dormant and can reactivate in the even of increase in demand for RBCs)

To a lesser degree

Granulocytes possess secretory granules in their cytoplasm and consist of: Eosinophils, basophils, and neutrophils.

Monocytes are leukocytes that differentiate into macrophages (that differentiate into different subtypes depending on their locus)

Erythrocytes are the anucleate, biconcave, oxygen-carrying, no mitochondria having RBCs we all know and love

Megakaryocytes are a large species of karyocytes responsible for thrombocytogenesis (platelet production)

Lymphocytes are all produced in the bone marrow, but their education and maturation happens in the thymus

Also contains multipotent cell lines that differentiate into:

Ones outside the bone marrow: Chondrocytes, myocytes, endothelial cells

Bone cells (Osteoblasts and osteoclasts)

Stem cells that can also proliferate (One stem cell splits into two, one matures, the other remains pluripotent)

Stromal cells

Precursors: a group of cells that can become adipocytes controls the formation of blood vessels in the bone marrow, and also regulates the differentiation of resident mesenchymal progenitor cells.

Adipocytes

Progenitor cells which are destined to mature into blood and lymphoid cells including dendritic cells