Chapter 5.3 ; Tissue Growth and Change

Question 1

Hypertrophy

Answer 1

enlargement of preexisting cells

Question 2

Hyperplasia

Answer 2

tissue growth through cell multiplication

Question 3

Atrophy

Answer 3

– shrinkage of a tissue through a loss in cell size or
number

Question 4

senile atrophy

Answer 4

through normal aging

Question 5

disuse atrophy

Answer 5

from lack of use (astronauts)

Question 6

Neoplasia

Answer 6

development of a tumor (neoplasm)

Question 7

Metaplasia

Answer 7

changing from one type of mature tissue to
another type of mature tissue

Question 8

Necrosis

Answer 8

inflammation (results in more extracellular fibers being produced – i.e. scar tissue) TOXIN DEATH

Question 9

Apoptosis

Answer 9

not associated with inflammation PROGRAMMED DEATH

Question 10

stem cells

Answer 10

undifferentiated cells that are not yet
performing any specialized function

Question 11

adult stem cells

Answer 11

undifferentiated cells of a tissue type in adults

– multipotent - bone marrow producing
several blood cell types
– unipotent – most limited plasticity (e.g.
producing only epidermal cells)