CNS Lab 1: Red Neurons and Cell Body Changes

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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?

Epidural hematoma Signup and view all the answers

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

Subdural hematoma Signup and view all the answers

What is a contracoup injury?

Injury caused by acceleration-deceleration forces Signup and view all the answers

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

Red neurons Signup and view all the answers

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

Brain herniation Signup and view all the answers

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

Hydrocephalus Signup and view all the answers

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

Tonsils Signup and view all the answers

Which condition involves absence of the fetal cranial vault?

Anencephaly Signup and view all the answers

What issue is indicated by narrowed sulci in the brain?

Brain herniation Signup and view all the answers

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

Depressed retracted yellowish brown patches involving the crests of gyri Signup and view all the answers

What is the appearance of plaques in Juane Cerebral palsy?

Cavitated white matter lesions involving frontal and occipital lobes Signup and view all the answers

What is a common cause of cerebral abscesses?

Extension from adjacent sinus infection Signup and view all the answers

Which condition is associated with Rod cell appearance in neurosyphilis?

Parenchymal involvement with neuronal loss Signup and view all the answers

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

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

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

Invading a cerebral vessel Signup and view all the answers