Bone marrow

Question 1

In a 2 week embryo where does haemopoiesis occur?

Answer 1

Yolk sack

Question 2

In a 12-16 week embryo where does haemopoiesis occur?

Answer 2

Liver and Spleen

Question 3

At birth where does haemopoiesis occur?

Answer 3

Bone Marrow of all bones

Question 4

In adults where does haemopoiesis occur?

Answer 4

In the proximal end of long bones and flat bones (e.g. Sternum, pelvis and vertebrae)

Question 5

Where is active and inactive marrow stored?

Answer 5

Active- red marrow

Inactive- yellow marrow