Causes of Cell Injury Flashcards
What is a disease?
the impairment of optimal function or homeostasis of an organism as a result of structural or chemical alteration
What is the function of the endoplasmic reticulum?
it is important for the creation of proteins
What is the function of ribosomes?
they facilitate the synthesis of proteins
What is the function of the golgi complex?
it is for processing and packaging of proteins into secretory vesicles
What is the function of the plasma membrane?
it encloses the entire cell and is the first part of the cell that comes in contact with harmful substances, agents, and infectious microbes
What happens if a cell doesn’t have a cell membrane?
it dies
What is the function of the cilia and microvilli in cells where they are present?
they are for movement
What is the function of microfilaments?
they are the mechanical portion of the cytoskeleton
What are basic changes in pathology?
cell injury, degeneration, cell death, disturbances of circulation, inflammation, neoplasia, congenital defects and disturbances of growth
What types of cell injury are there?
reversible and irreversible
On a cellular level, what is the cell like when reversible cell injury occurs?
swelling of the endoplasmic reticulum and mitochondria without damage
On a cellular level, what happens to the cell over all when irreversible cell injury occurs?
ER swells and loses its ribosomes, membrane blebs, myelin figures, nucleus condenses, and the mitochondria swells with amorphous densities
What are the responses to cell injury?
adaptation, be reversibly injured, or die
How does a cell adapt to cell injury?
hypertrophy, hyperplasia, atrophy, metaplasia, dysplasia
How does a cell act when it is reversibly injured?
increased water or lipid
