A nursing faculty member explains to the class that which item is the most important for tumor cell growth?
A.
Age of transforming cells
B.
Programmed cell death
C.
Proximity to a capillary
D.
Rapidity of cell growth
ANS: C
All cells, including tumor cells, need a consistent supply of oxygen and nutrients, delivered via the capillaries. Neoplastic cells must be in close enough proximity to a capillary to provide these required elements. The other factors do not have such an important role, if any, in neoplastic growth.
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Which type of medication can lead to an overdose if crushed, opened, or emptied into food?
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