MN551 Quiz 1
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
Chemical injury
Injury from biologic agents
Injury from nutritional imbalances
Cell injury from physical agents - CORRECT ANSWER-Mechanical forces
Temperature extremes
Electrical forces
Cell injury from radiation injury - CORRECT ANSWER-Ionizing radiation
UV radiation
Non-ionizing radiation
Chemical cell injury - CORRECT ANSWER-Drugs
Carbon tetrachloride
Lead toxicity
,Mercury
Cell injury from biologic agents - CORRECT ANSWER-Viruses
Parasites
Bacteria
Cell injury from nutritional imbalances - CORRECT ANSWER-Excesses and deficiencies
Reversible cell injury - CORRECT ANSWER-Impairs cell function but does not result in cell death
Two patterns of reversible cell injury - CORRECT ANSWER-Cellular swelling
Fatty change
Cellular swelling (cell injury) - CORRECT ANSWER-Impairment of the energy dependent Na+/K+
ATPase membrane pump, ususally as the result of hypoxic cell injury
Fatty change (cellular injury) - CORRECT ANSWER-Linking to intracellular accumulation of fat
True or False
Free radicals are non-reactive - CORRECT ANSWER-False
Free radicals are highly reactive
What causes free radicals to be highly reactive - CORRECT ANSWER-Having an unpaired electron
causes them to be unstable and highly reactive
,Causes of free radical injury - CORRECT ANSWER-Lipid peroxidation
Oxidative modification of proteins
DNA effects
What are the effects of acute cellular swelling - CORRECT ANSWER-Deprives the cell of oxygen
and interrupts oxidative metabolism and the generation of ATP
What type of cell injury is acute cellular swelling - CORRECT ANSWER-Hypoxic cell injury
True or false
The longer tissue is hypoxic, the greater change of irreversible cellular injury - CORRECT
ANSWER-True
Causes of cellular hypoxia - CORRECT ANSWER-Inadequate amount of oxygen in the air
Respiratory disease
Inability of the cells to use oxygen
Edema
Ischemia
, Purpose of calcium in cells - CORRECT ANSWER-Functions as an important second messenger
and cytosolic signal for many cell responses
What keeps cytosolic calcium levels low - CORRECT ANSWER-Energetic mechanisms
What are the energetic mechanisms that keep cytosolic calcium levels low - CORRECT ANSWER-
Ischemia- induced calcium disruption
Inappropriate activation of enzymes
Which of the following can result in membrane damage?
A.Inactivation of Na+/K+ ATPase
B.Oxidation of phospholipid
C.Ischemic activation of Ca2+-regulated protease
D.All the above
E.None of the above - CORRECT ANSWER-D
Types of programmed cell death - CORRECT ANSWER-Apoptosis
Necrosis
What is apoptosis equated with - CORRECT ANSWER-Suicide
What does cellular apoptosis eliminate - CORRECT ANSWER-Cells that are:
Worn out
Have been produced in excess
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
Chemical injury
Injury from biologic agents
Injury from nutritional imbalances
Cell injury from physical agents - CORRECT ANSWER-Mechanical forces
Temperature extremes
Electrical forces
Cell injury from radiation injury - CORRECT ANSWER-Ionizing radiation
UV radiation
Non-ionizing radiation
Chemical cell injury - CORRECT ANSWER-Drugs
Carbon tetrachloride
Lead toxicity
,Mercury
Cell injury from biologic agents - CORRECT ANSWER-Viruses
Parasites
Bacteria
Cell injury from nutritional imbalances - CORRECT ANSWER-Excesses and deficiencies
Reversible cell injury - CORRECT ANSWER-Impairs cell function but does not result in cell death
Two patterns of reversible cell injury - CORRECT ANSWER-Cellular swelling
Fatty change
Cellular swelling (cell injury) - CORRECT ANSWER-Impairment of the energy dependent Na+/K+
ATPase membrane pump, ususally as the result of hypoxic cell injury
Fatty change (cellular injury) - CORRECT ANSWER-Linking to intracellular accumulation of fat
True or False
Free radicals are non-reactive - CORRECT ANSWER-False
Free radicals are highly reactive
What causes free radicals to be highly reactive - CORRECT ANSWER-Having an unpaired electron
causes them to be unstable and highly reactive
,Causes of free radical injury - CORRECT ANSWER-Lipid peroxidation
Oxidative modification of proteins
DNA effects
What are the effects of acute cellular swelling - CORRECT ANSWER-Deprives the cell of oxygen
and interrupts oxidative metabolism and the generation of ATP
What type of cell injury is acute cellular swelling - CORRECT ANSWER-Hypoxic cell injury
True or false
The longer tissue is hypoxic, the greater change of irreversible cellular injury - CORRECT
ANSWER-True
Causes of cellular hypoxia - CORRECT ANSWER-Inadequate amount of oxygen in the air
Respiratory disease
Inability of the cells to use oxygen
Edema
Ischemia
, Purpose of calcium in cells - CORRECT ANSWER-Functions as an important second messenger
and cytosolic signal for many cell responses
What keeps cytosolic calcium levels low - CORRECT ANSWER-Energetic mechanisms
What are the energetic mechanisms that keep cytosolic calcium levels low - CORRECT ANSWER-
Ischemia- induced calcium disruption
Inappropriate activation of enzymes
Which of the following can result in membrane damage?
A.Inactivation of Na+/K+ ATPase
B.Oxidation of phospholipid
C.Ischemic activation of Ca2+-regulated protease
D.All the above
E.None of the above - CORRECT ANSWER-D
Types of programmed cell death - CORRECT ANSWER-Apoptosis
Necrosis
What is apoptosis equated with - CORRECT ANSWER-Suicide
What does cellular apoptosis eliminate - CORRECT ANSWER-Cells that are:
Worn out
Have been produced in excess
