Multiple Choice Questions

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Which of the following element is responsible for Minamata disease?

  • Hg

  • Pb

  • Cd

  • Fe


A.

Hg

Minamata disease is caused due to mercury. It is a disease of the central nervous system (CNS). It occurs due to poisoning caused by long- term consumption, in large amounts, of fish and shellfish from Minamata Bay. Mercury, is changed to water soluble dimethyl, mercury, which undergoes biomagnification. This disease is characterized by diarrhoea, haemolysis, impairment of various senses numbness of lips tongue, limbs etc.


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Scala vestibuli is connected with

  • fenestra rotundus

  • fenestra ovalis

  • scala tympani

  • scala media


The friction between the eyelids and the cornea is avoided by the secretion of

  • lachrymal glands

  • conjunctiva and eyelids

  • hardarian glands

  • Meibomian glands


Which statement is incorrect for ion-channels?

  • They are proteins

  • Movement through them is simple diffusion

  • Movement through them is from high to low concentration

  • All ions pass through the same type of channel


Part of the brain concerned with the muscular movement is

  • cerebellum

  • thalamus

  • Hippocampus

  • temporal lobe of cerebrum


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In human, corpus callosum connects

  • the two optic lobes

  • bone and muscle

  • the two cerebral hemispheres

  • two lobes of pituitary gland


Broca's area of speech is present in

  • frontal lobe

  • parietal lobe and partially in temporal lobe

  • temporal lobe

  • temporal and occipital lobe


Which part of the human brain is largest

  • Cerebellum

  • Thalamus

  • Cerebrum

  • Medulla


Short Answer Type

What is cochlear microphonics?


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What is axon reflex?


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