yellow and red bone marrow

Haematopoiesis

The process of producing blood cells in red bone marrow

Hematopoietic Stem Cells

Stem cells that can develop into all types of blood cells in red bone marrow

Red Blood Cells (Erythrocytes)

Blood cells that transport oxygen from lungs to tissues and carbon dioxide from the tissues to the lungs, contains hemoglobin

White Blood Cells (Leukocytes)

Blood cells involved in defending the body against infection and disease

Platelets (Thrombocytes)

Cell fragments involved in blood clotting, prevents excessive blood loss

Yellow Bone Marrow

A type of bone marrow that primarily stores triglycerides (fat) as an energy reserve, found in the medullary cavity

Red Bone Marrow

Produces blood cells through haematopoiesis

Adipocytes

Fat cells that make up most of yellow bone marrow, stores triglycerides

Triglycerides

Stored fats that serve as a long-term energy reserve for the body

Energy Reserve

Backup source of energy during periods of increased energy demand like starvation, severe illness, and prolonged fasting

Marrow Conversion

Under conditions of severe blood loss or increased demand for blood cells, some yellow marrow may convert back to red marrow