Cellular Adaptations

What are the two patterns of reversible cell injury visible under the light microscope?

• What are the two patterns of reversible cell injury visible under the light microscope?
• Cellular swelling and fatty change
• Swelling and disruption of lysosomes and fatty change
• Pyknosis and membrane blebbing
  

Myocardial fibres cannot divide

• True
• False

Which of these major inducers of apoptosis are intrinsic pathways?

• Withdrawal of growth factors/hormones
• Injury
  
• Receptor/ligand interactions
• Both A and B

Irreversible cell injury is characterised by which morphological changes?

• Disruption of cellular membranes
• Large amorphous densities in swollen mitochondria
• Profound nuclear changes (pyknosis, karyorrhexis, karyolysis)
• All of the above

A young man experiences multiple blunt trauma to the legs and laceration of the right femoral artery.  He loses a lot of blood during the time it takes to get to the emergency department.  On admission, his haemocrit is 10%.  Which of the following tissues is most likely to withstand damage from this event?

• Hippocampus
  
• Myocardium
• Skeletal muscle
• Small intestinal epithelium

Tags

NGSS.HS-LS1-3

Intracellular free calcium is much ______ than extracellular free calcium.

• Higher
• Lower
• Better
• Worse

Tags

NGSS.HS-LS1-3

A mature age student exercises little and eats mainly pizza and several serves of french fries daily.  Which tissue change is most likely to occur?

• Fatty degeneration of myocardium
• Hyperplasia of adipocytes
• Hypertrophy of adipocytes
• Metaplasia of muscle cells to adipocytes
  

Tags

NGSS.HS-LS1-4

Increase in cytosolic Ca2+ can damage mitochondria.

• True
• False

An honours student is working on a tissue morphology project in live animals.  Which of the following disease processes could account for the microscopic presence of karyorrhexis and cell fragmentation with preserved overall tissue architecture in this study?

• Brown atrophy of the heart
• Renal transplant rejection
• Suppurative appendicitis
• Viral hepatitis

What is karyolysis?

• Nuclear Condensation
• Nuclear Fragmentation
• Nuclear Dissolution