Cell Death & Adaptation Quiz

Study Notes

Cell Death & Adaptation

Apoptosis is an active, programmed process of cell death. It is a part of both normal physiology and pathology.
Necrosis is a passive process of cell death that only happens in pathology.
Necrosis triggers an acute inflammatory response, while apoptosis does not.
A single cell dying from necrosis can trigger the death of neighboring cells, leading to infarction.
Apoptosis does not normally cause damage to neighboring cells.
Infarction is an area of necrotic tissue.
Atrophy is a decrease in tissue size or cell number.
Atrophy can be either physiological or pathological.
Atrophy in young people can be caused by autophagy or apoptosis.
Atrophy in elderly people is mainly caused by apoptosis.
Autophagy is the process where cells shrink but are still alive.
The speed and severity of a stressor can affect whether it causes atrophy or necrosis.
Ischemia is a lack of blood supply.
Hypoxia is a lack of oxygen in the body.
Hypoxemia is a lack of oxygen in the blood.
Hypertrophy is an increase in cell size.
Hyperplasia is an increase in cell number.
Metaplasia is the reversible change from one type of cell to another.
Metaplasia is a response to changes in the cellular environment.
Labile cells are continually dividing.
Stable cells divide when stimulated.
Permanent cells do not divide.
Epithelial cells form the lining and covering of body cavities and organs.
Epithelial cells make up the secreting portions of glands.
Connective tissues create support and structure for tissues and organs.
Other types of cells include muscle and nerve cells.