Question

a middle aged man has come into the emergency room after a severe car accident. his wounds are actively bleeding. what two parts of the long bone are responsible for making blood to replace what he is losing from his car accident?
perio steum
articular cartilage
yellow bone marrow
red bone marrow
epiphysis
diaphysis

Explanation:

Red bone marrow is responsible for hematopoiesis (blood - cell formation) throughout life. In cases of severe blood loss, yellow bone marrow can convert to red bone marrow to increase blood cell production. The other options like periosteum, articular cartilage, epiphysis, and diaphysis are not involved in blood - cell production.

Answer:

C. yellow bone marrow
D. red bone marrow