Cellular adaptation, injury and death

Question 1

The cell has the ability to maintain their structure and function when exposed to stressful situations by undergoing adaptive changes, to ensure and maintenance. This is called…

Answer 1

Cellular adaptation

• only when stress is overwhelming (or adaptation ineffectual) that cell injury or death occurs

Question 2

This type of adaptation occurs in response to appropriate stimulus and ceases when the need for adaptation is removed - Term…

Answer 2

Normal cellular adaptation

Question 3

Mechanism of cellular adaptation

Process»>

Answer 3

Molecular mechanisms mediatings cellular adaptation
> depend on signals transmitted by Chemical Messengers
» They influence gene function
» these genes fall into 2 categories
1) Housekeeping Genes
2) Differentiating Genes

Question 4

In many adaptive cellular responses

1) differentiation gene is______
2) housekeeping gene_______

Answer 4

1) altered
2) remains the same (unchanged)

Thus cell is able to change size and form without compromising its normal function

Question 5

What happens once the stimulus that triggers adaptation is removed?

Answer 5

Cell resumes its previous state of specialized function

Adaptive responses cease once removal of need has occured

Question 6

Type of gene…

Necessary for normal cell function

Answer 6

Housekeeping Genes

Question 7

Type of gene…

That determine the differentiating characteristics of a particular cell type.

Answer 7

Differentiating Genes
(specific role) triggered by various stress

Question 8

Term.

Implies that an organ constantly varies and adjusts physiological parameters to maintain stable function

Answer 8

Allostasis

Question 9

Term.

Implies that an organism remains within a certain range of physiological parameters to maintain stable function

Answer 9

Homeostasis