CNS Lab 1: Red Neurons and Cell Body Changes
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Questions and Answers

What is the most likely cause of the subarachnoid hemorrhage described in the text?

  • Lacunar infarct
  • Hyaline arteriolosclerosis
  • Berry aneurysm rupture (correct)
  • Hypertensive disease
  • Which condition is characterized by mural thickening and deposition of homogenous, acellular, eosinophilic material in vessel walls?

  • Cerebral atrophy
  • Hyaline arteriolosclerosis (correct)
  • Subdural hematoma
  • Contusions
  • Where are small lacunar infarcts most commonly found?

  • Cerebellum
  • Basal ganglia (correct)
  • Occipital lobe
  • Frontal lobe
  • What type of hemorrhage is associated with a blood clot over the external surface of the dura within the cranial cavity?

    <p>Epidural hematoma</p> Signup and view all the answers

    What can cause torn cerebral veins, particularly in cases of significant cerebral atrophy?

    <p>Subdural hematoma</p> Signup and view all the answers

    What is a contracoup injury?

    <p>Injury caused by acceleration-deceleration forces</p> Signup and view all the answers

    What condition is characterized by pyknotic nucleus, loss of Nissl substance, and intense eosinophilia of the cytoplasm?

    <p>Red neurons</p> Signup and view all the answers

    What neurological event is indicated by the presence of Duret hemorrhages?

    <p>Brain herniation</p> Signup and view all the answers

    What condition is characterized by marked dilation of the cerebral ventricles?

    <p>Hydrocephalus</p> Signup and view all the answers

    Which structure herniates through the tentorium due to swelling of the left cerebral hemisphere?

    <p>Tonsils</p> Signup and view all the answers

    Which condition involves absence of the fetal cranial vault?

    <p>Anencephaly</p> Signup and view all the answers

    What issue is indicated by narrowed sulci in the brain?

    <p>Brain herniation</p> Signup and view all the answers

    What is the characteristic appearance of old contusions seen in the brain?

    <p>Depressed retracted yellowish brown patches involving the crests of gyri</p> Signup and view all the answers

    What is the appearance of plaques in Juane Cerebral palsy?

    <p>Cavitated white matter lesions involving frontal and occipital lobes</p> Signup and view all the answers

    What is a common cause of cerebral abscesses?

    <p>Extension from adjacent sinus infection</p> Signup and view all the answers

    Which condition is associated with Rod cell appearance in neurosyphilis?

    <p>Parenchymal involvement with neuronal loss</p> Signup and view all the answers

    What is the 'soap bubble'-like appearance seen in cryptococcal infection?

    <p>Microorganism extending into the brain following vessels in the Virchow-Robin spaces</p> Signup and view all the answers

    What is a characteristic feature of Aspergillus invasion in the brain?

    <p>Invading a cerebral vessel</p> Signup and view all the answers

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