BMTCN ACTUAL EXAM SCRIPT 2026
QUESTIONS AND SOLUTIONS GRADED A+
◉What is the objective of hematopoiesis? Answer: Maintain
peripheral blood with a constant level of different types of blood
cells
◉What is immune function partially dependent on? Answer:
Hematopoiesis
◉Define innate immunity: Answer: These responses occur
naturallyand utilize phagocytic cells that release inflammatory
mediators as well as nature killer (NK) cells.
◉Define acquired immunity: Answer: The responses involve
antigen specific B and T cells and are either humoral or cell
mediated.
◉When do problems arise in the immune system? Answer:
Problems arise when there is overwhelming infection, inherited
genetic mutations, acquired disorders, aging, and medications that
interfere with normal immune function
, ◉Red Bone Marrow Answer: Consists of HSCs and originates in flat
and long bones. At birth, BM is red and converts to yellow as one
ages.
◉Yellow Bone Marrow Answer: Consists of fat cells and resides in
the hollow interior of the middle portion of long bones. At birth, BM
is red and converts to yellow as one ages.
◉BM during fetal development: Answer: Hematopoiesis occurs in
the liver and yolk sac. 20th week of gestation, BM begins to produce
blood cells, and by week 30, BM has achieve normal cellularity. 90%
at birth.
◉BM during childhood: Answer: Hematopoiesis occurs in the long
bones.
◉BM at age 30: Answer: Hematopoiesis occurs exclusively in the
axial skeleton, pelvis, vertebrae, ribs, sternum, and skull. Cellularity
is at 50%
◉BM at age 70: Answer: Declines to 30% cellularity
◉Define extramedullary hematopoiesis: Answer: If BM injury
occurs, hematopoiesis can resume in the liver and spleen
QUESTIONS AND SOLUTIONS GRADED A+
◉What is the objective of hematopoiesis? Answer: Maintain
peripheral blood with a constant level of different types of blood
cells
◉What is immune function partially dependent on? Answer:
Hematopoiesis
◉Define innate immunity: Answer: These responses occur
naturallyand utilize phagocytic cells that release inflammatory
mediators as well as nature killer (NK) cells.
◉Define acquired immunity: Answer: The responses involve
antigen specific B and T cells and are either humoral or cell
mediated.
◉When do problems arise in the immune system? Answer:
Problems arise when there is overwhelming infection, inherited
genetic mutations, acquired disorders, aging, and medications that
interfere with normal immune function
, ◉Red Bone Marrow Answer: Consists of HSCs and originates in flat
and long bones. At birth, BM is red and converts to yellow as one
ages.
◉Yellow Bone Marrow Answer: Consists of fat cells and resides in
the hollow interior of the middle portion of long bones. At birth, BM
is red and converts to yellow as one ages.
◉BM during fetal development: Answer: Hematopoiesis occurs in
the liver and yolk sac. 20th week of gestation, BM begins to produce
blood cells, and by week 30, BM has achieve normal cellularity. 90%
at birth.
◉BM during childhood: Answer: Hematopoiesis occurs in the long
bones.
◉BM at age 30: Answer: Hematopoiesis occurs exclusively in the
axial skeleton, pelvis, vertebrae, ribs, sternum, and skull. Cellularity
is at 50%
◉BM at age 70: Answer: Declines to 30% cellularity
◉Define extramedullary hematopoiesis: Answer: If BM injury
occurs, hematopoiesis can resume in the liver and spleen
