What is the primary site of hematopoiesis in adults, responsible for producing approximately 500 billion blood cells per day?

A Bone marrow ✓
B Spleen
C Liver
D Lymph nodes

Explanation

In adults, the bone marrow is the primary site of hematopoiesis, producing a vast number of blood cells daily.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Hematopoiesis Hematology: Hematopoiesis Easy MEDICAL Confidence: high