Pediatric and Adult Hematopoiesis

Question 1

**Newborn percentage active in bone marrow **

a. 60%
b. 80 – 90%
c. 40%-60%
d. 70-100%

Answer 1

b. 80 – 90%

Question 2

**Young adult (age 20) active bone percentage
**
a. 60%
b. 80 – 90%
c. 40%-60%
d. 70-100%

Answer 2

a. 60%

Question 3

Older adult (age 55) active bone percentage
a. 60%
b. 40%– 60%
c. 40%
d. 70-100%

Answer 3

c. 40%

Question 4

Older adult (age 55) fat bone percentage

a. 60%
b. 40%– 60%
c. 40%
d. 70-100%

Answer 4

a. 60%

Question 5

Ratio of marrow cells to fat (red marrow/yellow marrow)

A. Hypocellular/hypoplastic
B. Aplastic:
C.CELLULARITY
D.Hypercellular/hyperplastic:

Answer 5

C.CELLULARITY

Question 6

CELLULARITY

marrow has 30 – 70% hematopoietic cells

A. Normocellular
B. Aplastic:
C.CELLULARITY
D.Hypercellular/hyperplastic

Answer 6

A. Normocellular

Question 7

CELLULARITY

marrow has >70% hematopoietic cells

A. Normocellular
B. Aplastic:
C.CELLULARITY
D.Hypercellular/hyperplastic

Answer 7

D.Hypercellular/hyperplastic

Question 8

marrow has less than 30% hematopoietic cell

A. Normocellular
B. Aplastic:
C.Hypocellular/hypoplastic
D.Hypercellular/hyperplastic

Answer 8

C.Hypocellular/hypoplastic

Question 9

marrow has few or no hematopoietic cells

A. Normocellular
B. Aplastic:
C.Hypocellular/hypoplastic
D.Hypercellular/hyperplastic

Answer 9

B. Aplastic

Question 10

Ratio of granulocytes and their precursors to nucleated erythroid precursors

A. Cellularity ratio
B. Aplastic:
C.Hypocellular/hypoplastic
D. M:E (Myeloid : Erythroid) ratio

Answer 10

M:E (Myeloid : Erythroid) ratio

Question 11

Excluded from the M:E ratio

A. Lymphocytes and neutrophils
b. neutrophils and monocyte
c. monocyte and neutrophils
d. lymphocytes and monocyte

Answer 11

d. lymphocytes and monocyte