Neurology Questions
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Questions and Answers

What is the name of the structure that sends fibers to the cerebral cortex in the optic radiation?

  • Lateral geniculate nucleus
  • Optic nerve
  • Optic chiasm
  • Superior colliculus (correct)
  • Which of the following is NOT a possible finding in a hypertensive patient experiencing a sudden decrease in vision?

  • Macular hole
  • Macular star
  • Papilledema (correct)
  • Retinal vein occlusion
  • Which of the following is NOT a characteristic finding in hypertensive retinopathy?

  • Cotton wool spots
  • Attenuation of retinal arteries
  • Segmentation of the blood column of retinal veins (correct)
  • Deeply seated hard exudates
  • What is a major predisposing factor for the development of branch retinal vein occlusion caused by chronic, poorly controlled hypertension?

    <p>Arteriovenous nicking</p> Signup and view all the answers

    A hypertensive patient develops a dry cough after starting a medication that reduces preload and afterload. Which of the following medications is most likely to have the same benefits without causing cough?

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

    Which of the following drug classes can potentially reverse cardiac hypertrophy in patients with hypertension?

    <p>ACE inhibitors</p> Signup and view all the answers

    Which of the following medications is specifically approved for the treatment of subarachnoid hemorrhage?

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

    A patient with persistent hypertension despite regular medications is prescribed an additional drug that dilates blood vessels by blocking calcium channels. This medication most likely belongs to which class?

    <p>Calcium channel blockers</p> Signup and view all the answers

    What is the name of the condition where a retinal vein is narrowed at the point where it crosses an artery, often associated with hypertension?

    <p>Arteriovenous nicking</p> Signup and view all the answers

    Which of the following is NOT a potential side effect of medications that reduce preload and afterload, such as ACE inhibitors, in hypertensive patients?

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

    Study Notes

    Cerebral Infarcts and Necrosis

    • Cerebral infarcts undergo liquefactive necrosis, characterized by the transformation of tissue into a liquid viscous mass.
    • Common features of cerebral tissue changes include being wedge-shaped, appearing raised due to edema, exhibiting areas of softening, and being depressed with gliosis.
    • May present fibrinous exudate on the surface.

    Cranial Nerve Examination

    • Enables evaluation of the brain stem function.
    • Optic nerve assessment includes visual acuity, visual fields, and funduscopic examination.
    • Olfactory nerve is tested with non-volatile stimuli while occluding one nostril.
    • Oculomotor, trochlear, and abducens nerves are assessed together due to similar functions.
    • Trigeminal nerve assessment is incorrect in that it has both sensory and motor functions, contrary to it being only motor.

    Motor Examination

    • Involves several aspects: assessment of muscle bulk, tone, spontaneous movements, and strength testing.
    • Spasticity indicates upper motor neuron lesions, while flaccidity indicates lower motor neuron lesions.
    • Rigidity presents variable resistance dependent on position and movement speed.

    Drug Mechanisms

    • Certain drugs may act by indirectly inhibiting thrombin via antithrombin activation or directly inhibiting thrombin.
    • Some drugs may indirectly inhibit factor Xa while others antagonize vitamin K's effects.

    Cognitive and Emotions Module

    • Destruction of the amygdala leads to loss of fear and rage, resulting in placidity.
    • Emotional aspects of long-term memories are primarily stored in the neocortex and amygdaloid nuclei.
    • Regions causing sensations of punishment include the basal ganglia, hippocampus, and hypothalamus.

    Disorder Classification

    • Disorders of mood include mood swings, irritability, and depersonalization.
    • Disorders of affect share similar features with mood disorders.

    Diabetic Retinopathy

    • The internal carotid artery has three bends.
    • Ophthalmic artery is a significant branch of the internal carotid artery.
    • Diabetic retinopathy features include flame hemorrhages and macular edema, while arteriovenous nicking is not included.
    • Microaneurysms signify dilatation of retinal arterioles and can be treated with laser photocoagulation.
    • Repaglinide acts as an insulin secretagogue, whereas metformin can cause lactic acidosis.

    Neurology and Retinopathy

    • The central artery of the retina branches from the ophthalmic artery and requires review of its path and branches.
    • Müller cells are not nerve cells; they possess unique structural features within the retina.
    • The outer plexiform layer is formed by synapses between photoreceptors and bipolar cells.
    • Visual impulses predominantly relay through the lateral geniculate body to the cerebral cortex.
    • Hypertensive retinopathy impacts the retinal vasculature, leading to conditions such as branch retinal vein occlusion.

    Hypertension Management

    • Calcium channel blockers may effectively reduce blood pressure and aid in cases of persistent hypertension.
    • ACE inhibitors can reverse cardiac hypertrophy, while specific drugs like Nimodipine are approved for treating subarachnoid hemorrhage.

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    Description

    A set of questions related to neurology, covering topics such as cerebral infarcts, cranial nerve examination, and more.

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