What is the primary site of hematopoiesis in adults, responsible for producing over 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, where hematopoietic stem cells differentiate into various blood cell types.

Source

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