Cellular responses to stress

Question 1

Define Aetiology.

Answer 1

cause can be genetic or acquired (environment)

Question 2

Define Hypertrophy.

Answer 2

Increase in size of cells.organ gets bigger.

e.g skeletal muscles

Question 3

Define hyperplasia.

Answer 3

increase in cell number

e.g cancer or tumours

Question 4

Define Atrophy.

Answer 4

reduction in the size of an organ or tissue resulting from a decrease in cell size.

Question 5

what is metaplasia?

Answer 5

reversible change of one cell type into another.

e.g columnar ciliated epithelium is replaced by stratified squamous epithelium.