Op4003:nervous System Disease And Eye Flashcards
(15 cards)
What are the two main parts of the nervous system?
Central and Peripheral Nervous Systems.
What cell type produces myelin in the CNS?
Oligodendrocytes.
Name a protective feature of the CNS.
Skull, meninges, CSF, or blood-brain barrier.
What is atrophy?
Shrinkage of cells.
What is metaplasia?
Change from one cell type to another.
What is apoptosis?
Programmed cell death.
Name a childhood eye cancer.
Retinoblastoma.
What causes visual field defects in stroke?
Disruption of the visual pathway from reduced blood flow.
Which nerve is affected in lateral gaze palsy?
6th cranial (abducens) nerve.
How does MS affect vision?
Optic nerve demyelination leads to vision and color loss.
What is the hallmark of myasthenia gravis?
Muscle fatigue, especially in eye muscles (ptosis, diplopia).
What is a key sign of idiopathic intracranial hypertension?
Bilateral papilloedema.
What symptom might indicate pulsatile tinnitus?
Hearing a heartbeat in the ears, linked with IIH.
Patient D had afternoon ptosis and fatigue. What is the diagnosis?
Myasthenia Gravis.
Patient E had vision changes and arm tingling. What is the diagnosis?
Multiple Sclerosis.
