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10 Cards in this Set

  • Front
  • Back
What can altered cellular and tissue biology result from?
(1) adaptation
(2) injury
(3) neoplasia
(4) aging
(5) death
What does adaptation occur in response to?
both normal, or physiologic, conditions and adverse, or pathologic, conditions
What is injury classified as?
(1) chemical
(2) hypoxic (lack of sufficient oxygen)
(3) free radical
(4) intentional
(5) unintentional
(6) immunologic
(7) infection
(8) inflammatory
How is cellular death confirmed?
by structural changes seen when cells are stained and examined under a microscope
What does cellular aging cause?
structural and functional changes that eventually may lead to cellular death or a decreased capacity to recover from injury.
Why do cells adapt to their environment?
to escape and protect themselves from injury
What are the most significant adaptive changes in cells?
(1) atrophy (decrease in cell size)
(2) hypertrophy (increase in cell size)
(3) hyperplasia (increase in cell number)
(4) metaplasia (reversible replacement of one mature cell type by another less mature cell type)
Is dysplasia (deranged cellular growth) considered a true cellular adaptation?
no, it is considered an atypical hyperplasia
What is atrophy?
a decrease or shrinkage in cellular size
What happens if atrophy occurs in a sufficient number of an organ's cells?
the entire organ shrinks and becomes atrophic