Multiple Choice Questions

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The 'end organs of Ruffini' are receptors of :

  • heat

  • cold

  • pressure

  • touch


A.

heat

'End organs of Ruffini' are elongated and somewhat spindle-shaped, having two or more interwinding and encapsulated dendrites of sensory neurons. They occur in the deeper layer of dermis. These are thermoreceptor organ ie., are sensitive to heat.


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Which of the following part of human brain is associated with integration of sympathetic and parasympathetic activities ?

  • Cerebrum

  • Neopallium

  • Hypothalamus

  • Medulla oblongata


Human brain has greater development of

  • cerebrum

  • cerebellum

  • optic lobes

  • medulla oblongata


In the myopia eye defect, the rays of light :

  • do not enter the eye at all

  • meet at a focus in front of the retina

  • come to a focus at back of retina

  • come to a focus in between retina and iris


Sensory receptor of warmth located principally at the tip of fingers is known as :

  • Weber's organ

  • organ of Giraldes

  • Ruffini's corpuscles

  • organ of Zuckerkandl


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The genes and splenium in brain are associated with

  • cerebellum

  • crebrum

  • medulla oblongata

  • vermis


Arbor-vitae is composed of

  • grey matter

  • neurogleal cells

  • white matter

  • all of the the above


Foramen magnum is situated in

  • buccal cavity 

  • base of skull

  • left auricle 

  • vertebrae


The unidirectional transmission of a nerve impulse through nerve fibre is due to :

  • neurotransmitters are released by axon endings

  • neurotransmitters which are released by dendrites

  • nerve fibre which is insulated by a medullary sheath

  • sodium pump which starts operating into the nerve fibre


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Cranium is made up of

  • 8 bones

  • 12 bones

  • 10 bones

  • 16 bones


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