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Flashcards in CELLULAR ADAPTION Deck (17)
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1

Explain a 'Housekeeping Gene'

Maintenance of basic cellular function/normal function

2

Explain a 'Differentiating Genes'

Determines characteristics of a particular cell type

3

Define 'Homeostasis'.

Organism remaining in certain range to maintain stable function

4

Define 'Allostasis'.

Organ constantly varies and adjust to maintain stable function

5

Name the 5 types of Adaptive Cells.

- Atrophy
- Hypertrophy
- Hyperplasia
- Metaplasia
- Dysplasia

6

Define 'Atrophy'.

Decreasing cell size from lack of work demands/environmental conditions

7

Describe 'Denervation Atrophy'.

Disuse in muscles of paralyzed limb

8

Describe 'Loss of Endocrine Stimulation Atrophy'.

Atrophic change in uterus from loss of estrogen during menopause

9

Describe 'Inadequate Nutrition Atrophy'.

Seen in malnutrition

10

Describe 'Ischemia Atrophy'. (lack of blood flow)

Cell decrease size and energy requirements to survive

11

Define 'Hypertrophy'.

Increasing cell size with increase in tissue mass

12

Which tissues are common to have Hypertrophy?

Skeletal and Cardiac muscle tissue - cannot form more cells by mitotic division

13

Thickening of organ from abnormal functioning of structure is an example of?

Adaptive Hypertrophy

14

Enlargement of remaining organ/tissue after a portion has been removed is an example of?

Compensatory Hypertrophy

15

Define 'Hyperplasia'.

Increase in number of cells in an organ that are capable of mitotic division

16

Define 'Metaplasia'.

Reversible change - adult cell type replaced by another cell type - reprogramming of an undifferentiated cell - may predispose to cancerous transformation

17

Define 'Dysplasia'.

Deranged cell growth of a specific tissue - a precursor of cancer