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46 Cards in this Set

  • Front
  • Back
We have around _____ different types of cells in the human body. The number of cells in the human body is somewhere in the _____. Disease can be thought of _____.
20
trillions
the change in cells (structure/function and/or variation)
Define pathogenesis
The development of cell change. Broken up into 2 parts: the cell change and the body's response.
Define Etiology
the cause of the cell change
List the main diagram
Cause of cell change/etiology

Development of cell changes/pathogenesis = Cell Changes-> Body's Response

Signs/Symptoms (S/S)

Treatment

Outcome
There are large numbers of _____ and limited number of _____.
etiologies & diseases but about 20 pathogenic responses/mechanisms.
Signs are _____, symptoms are _____.
objective measurements like temperature
subjective indicators of disease like nausea
Treatment is considered +/- because
it may or may not be needed.
Etiologies:
Decrease in blood supply
Ischemia
Etiologies:
Decrease of oxygen
Hypoxia
Etiologies: Infectious agents. Give an example
Viruses, bacteria, fungi
Etiologies: Explain immunologic reactions.
Divided into intentional (meant to protect us, but actually causes disease) and unintentional (autoimmune diseases)
The immune system, in protecting us, makes us _____.
sick (inflammation, allergy, aches, pains)
Etiologies: Genetic Factors: either _____ or _____
inherited or new mutations
Etiologies: Nutrition: broken up into _____ or _____
excess or deficiencies
radiation, pressure, electricity, mechanical forces like trauma, temperature differences are all
physical agent etiologies
Etiology: aging
decrease in the ability to response to changes in environment
Etiology: unknown cause
idiopathic
List the 2 different categories of cellular changes (1.2)
Lethal & non-lethal cellular changes
List the 4 different cellular adaptions
atrophy
hypertrophy
hyperplasia
metaplasia
swelling
edema
hemorrhage
Bleeding or the abnormal flow of blood
if the cellular change is lethal cell injury, the body's response is
necrosis
atrophy definition...
it results from...
reduction in cell size
loss of intercellular organelles
hypertrophy definition
increase in cell size
hyperplasia definition
increase in the number of cells
neoplasia definition
new growth. I'm pretty sure cancer
metaplasia definition
change from 1 mature cell type to another mature cell type
Difference between physiologic cell change and pathogenic cell change (1.2)
physiological are adaptions in response to something in the body and usually are good adaptions. Pathologic are not adaptions but from unknown sources and usually result in negative cellular changes
thrombosis definition
blood clot
Cell membrane is necessary for _____
ionic homeostasis
These organelles are responsible for protein synthesis
golgi body & rough ER
The 4 cell components most susceptible to cell injury:
cell membrane
mitochondria
protein synthesis (rough ER, golgi body)
nucleus (genetic material)
Loss of ATP results in the _____. For example, the loss of the _____, which results in the influx of _____, which results in cellular ______.
cessation of most homeostatic paths
Na+ pump
Na+ ions and water
swelling
ROS
Reactive O2 Species: Free radicals; unstable intracellular molecules which attack and degrade many cell components (DNA, RNA, membranes)
Loss in Ca++ homeostasis results from _____ and results in _____.
membrane damage (thus the influx of Ca++ into cytosol).

activating catabolic enzymes that break down cell
activates apoptosis (cell suicide)
Metabolically _____ cells are more vulunerable to injury because _____.
active
they eat up ATP.
Irreversible cellular change which results in necrosis occurs when the _____ and _____ are too compromised to recover.
cell membrane and ATP
All physiologic cellular adaptions are _____.
reversible
an exogenous agent causing lethal cell injury
necrosis (opposed from apoptosis or cell suicide)
4 types of necrosis
which is the most common
coagulative, liquefactive, caseous, fat

coagulative is the most common
Coagulative necrosis defined
Hypoxia/Cell deprived of oxygen
cytoplasm and organelles denature into a puddle of protein
pyknosis & karyorrhexis
Cell membrane ruptures, spilling out organelles
Nucleus condenses (_____) and breaks up (_____)
pyknosis
karyorrhexis
Liquifactive necrosis defined:
Lytic enzymes from lysasomes kill the cell during acute inflammation
Caseous necrosis defined:
Chronic inflammatory lesions (granulomas) in TB
Aptosis procedure
signal to begin (from inside/outside the cell)
Activation of degradative/catabolic enzymes called caspases
Caspases degrade intracellular proteins and nucleic acids, but leave membrane intact
Cell morphology changes (yknosis, karyorrhexis)
the cell fragments (each fragment is membrane-bound)
fragments are phagocytosed by macrophages
caspases
catabolic enzymes involved in apoptosis