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Biology

361)Pseudounipolar neurous occur in
Retina of eye Schneciderian membrane
Cells of dorsal root ganglion Pyramidal cells of cerebral cortex
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362)When the inside of membrane becomes more negative it leads to
Hyperpolarisation Polarisation
Repolarisation Depolarisation
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363)The change in potential on applying a stimulus to a neuron is called
Action potential Spike potential
Resting potential Both (a) and (b)
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364)The conduction rate of impulse is faster in case of
Non myelinated nerve fibres Myelinated nerve fibres
Thicker nerve fibres Both (b) and (c)
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365)The act responsible for the depolarisation of the neuron is
Opening of voltage gated Na+ channel Opening of voltage gated K+ channel
Closure of voltage gated Na+ channel Closure of voltage gated K+ channel
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366)Which of the following will be true in the presence of Ca2+ blockers
Neurotransmitter is not released but Na+ channel of post-synaptic neuron will open up Neurotransmitter is released but Na+ channel of post-synaptic neuron will open up
Neither neurotransmitter is released nor Na+ channel of post-synaptic neuron open up Neurotransmitter is released but Na+ channel of post-synaptic neuron will not open up
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367)Activities of cerebellum are
All voluntary and may involve learning in their early stage All involuntary but may involve learning in their early stage
All involuntary and do not involve learning in their early stage All voluntary and do not involve learning in their early stage
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368)The common fact about serotonin, acetylcholine, adrenaline and nor-adrenaline is
All are blood presure lowering drugs All are pain relieving drugs
All are antidiuretic drugs All are chemical transmitters or neurohormones
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369)The genu and splenium in brain are associated with
Cerebrum Medulla oblongata
Vermis Cerebellum
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370)The part of brain that involve in organising the behaviour of an organism related to its survival is
Cerebral cortex Hypothalamus
Amygdal lobe Corpus Callorsum
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371)Which part of the brain palys an important role in emotional behaviour, such as aggression and remembering fear?
Amygdala Limbic system
Thalamus Hippocampus
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372)Which of the following transmits impulses from one side of the cerebellum to the other?
Cerebellum Corpona quadrigemina
Crura cerebri Pens varoli
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373)In which of the following the vomiting centre is situated?
Hypothalamus Medulla
Cerebellum Cerebrum
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374)What is the function of choroid plexus?
To produce blood To produce cerebrospinal fluid
To produce endolymph To produce lymph
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375)Superior cerebellar penduncles are the link between
Cerebellum and pons Cerebellum and spinal cord
Cerebellum and medulla Cerebellum and mid brain
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