A student is learning about the process of hematopoiesis and how ...

[imanialler]

A student is learning about the process of hematopoiesis and how it is affected by leukemia. Which information does the student discover? (Select all that apply.)
 
  A.
  Blast cells multiply faster than mature cells.
  B.
  Leukemia disrupts normal hematopoiesis.
  C.
  Lymphoid cells differentiate into B and T cells.
  D.
  Myeloid cells crowd out normal cells in bone marrow.
  E.
  Pancytopenia occurs from proliferation of mast cells.

Question 2

The student nurse studying childhood cancers understands that neoplasms are caused by which factors? (Select all that apply.)
 
  A.
  Chromosomal/genetic abnormalities
  B.
  External stimuli or environment
  C.
  Maternal nutrition during gestation
  D.
  Substance abuse during pregnancy
  E.
  Viruses that alter the immune system

[jackie]

Answer to Question 1

ANS: A, B, C
Blast, or immature, cells have an increased rate of proliferation and multiply at the expense of normal cells. Leukemia does disrupt normal hematopoiesis (production and development of blood cells). Lymphoid cells differentiate into B and T cells. Myeloid cells differentiate into red blood cells, monocytes, granulocytes, and platelets; they do not reproduce and crowd out normal cells in the marrow. Pancytopenia occurs when large numbers of blast cells reproduce and crowd out normal marrow components.

Answer to Question 2

ANS: A, B, E
Neoplasms are caused by one or a combination of the following: chromosomal or genetic abnormalities, external stimuli or the environment, and/or viruses that alter the immune system. Nutritional deficits and substance abuse by the mother can certainly lead to developmental and other health problems, but do not lead to childhood cancers.

[imanialler]

Thank you

[jackie]

Happy to help you