VERSIONS QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+(PORTAGE LEARNING) GENERATED
PASS 2024-2025
Explain what necrosis is and give an example and description of one type of necrosis. -
Necrosis refers to cell death in an organ or tissues that is still part of a living person. It
often interferes with cell replacement and tissue regeneration. Coagulative necrosis
results most often from a sudden cutoff of blood supply to an organ (ischemia),
particularly the heart and kidney. Liquefactive necrosis occurs when some of the cells
die but their catalytic enzymes are not destroyed. It is commonly seen with brain infarcts
or abscesses. Caseous necrosis occurs as part of granulomatous inflammation and is
most often associated with tuberculosis.
Gangrenous necrosis most often affects the lower extremities or bowel and is
secondary to vascular occlusion. The term gangrene is applied when a considerable
mass of tissue undergoes necrosis. In dry gangrene the affected tissue becomes dry
and shrinks, the skin wrinkles, and its color changes to dark brown or black. The spread
of dry gangrene is slow. It results from a cut off in arterial blood supply and is a form of
coagulation necrosis. In wet gangrene, the affected area is cold, swollen, and pulseless.
The skin is moist, black, and under tension. Blebs form on the surface, liquefaction
occurs, and a foul odor is caused by bacterial action. The spread of tissue damage is
rapid.
Match the type of cell injury to the cause. Some answer may be used more than once. -
Know causes of cell injury: physical agents, radiation, chemical injury, biologic agents,
nutritional imbalances, free radical injury, hypoxic cell injury
and know examples of each type
List the 4 types of tissue found in the body. Pick 2 and give a description and example
of each. - 4 types: epithelial, connective, muscle, nervous
and know descriptions and examples within each type
What term means "cell eating" and engulfs and then kills microorganisms or other
particulate matter? - phagocytosis