Hemopoeisis

Question 1

In fetal life, where do blood cells form during the 0-2 month stage of life?

Answer 1

Yolk sac

Question 2

In fetal life, where do the blood cells form during the 2-7 month stage of life?

Answer 2

Liver and spleen

Question 3

In fetal life, where do the blood cells form during the 5-9 month stage of life?

Answer 3

Bone marrow; bone marrow comes into play and takes over

Question 4

After birth, in infants and children, where do the blood cells form?

Answer 4

~50% of bone marrow

Question 5

After birth, in adults, where do the blood cells form?

Answer 5

Vertebral bodies, ribs, sternum, skull bones, sacrum, pelvic bones and proximal ends of femurs