Question

of the 11 organ systems of the human body, which one houses the primary location for blood cell production?
answer
○ cardiovascular system
○ skeletal system
○ endocrine system
○ muscular system
○ i don’t know yet

Explanation:

Blood cell production (hematopoiesis) primarily occurs in the bone marrow, which is part of the skeletal system. The cardiovascular system transports blood, endocrine regulates via hormones, and muscular enables movement—none house blood cell production sites.

Answer:

B. Skeletal system