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Quiz 160
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3181. Touch receptors are:
Pacinian's corpuscles
Olfactory receptors
meissner's corpuscles
nociceptor
3182. A long extension of a nerve cell is called:
Axon
Auxins
Schwann cell
Dendrites
3183. To study sex linkages in Drosophila,Morgan mated white eyed males with wild type red eyed female what will be the phenotyte of offspring?
All red eyed male and female
White eyed female and red eyed male
red eyed female and white eyed male
II white eyed female and male
3184. Which of the following is an example of spiral-shaped bacteria?
Diplococcus pneumonia
Hyphomicrobium
Escherichia coli
Pseudomonas
3185. During conduction of nerve impulse hyperpolarization would not occur:
Sodium gates didn't close in time
Potassium gates were not so lousy
Calcium gates open instantly
Sodium potassium pump stopped working
3186. Which option given below characterizes refractory period?
Reversal of charges across the neural membrane
Change in the type of ions across the membrane
Next impulse can be conducted
Membrane potential +50mV
3187. Neurotransmitter secreted at the synapse outside the CNS is:
Dopamine
Polypeptide
Androgen
Acetylcholine
3188. In nervous system Acetylcholine and Nor-adrenalinen are two chemical messengers and are called --------
Neurotransmitters
Hormones
chemoreceptor
enzymes
3189. The neurotransmitter active outside the CNS(central nervous system) is:
Acetylcholine
Dopamine
Glutamate
Serotonin
3190. The chemical messengers that transmit action potential across the synapse in the form of chemicals are ?
Synaptic knob of synapse
Reflex actions
neurotransmitters
Acetylcholine sterase
3191. Which of the following neurotransmitters is lying outside the central nervous system ?
Acetylcholine
Endorphins
Dopamine
Gamma-aminonutyric acid
3192. These are required for the impulse to transfer from presynaptic to post synaptic neuron:
Sodium
Potassium
Calcium
Proteins
3193. Which of the following function dopamine serves?
Transmission blocker
Neurotransmitter
Anesthesia
Sedative
3194. All of the following are examples of polysynaptic transmission except:
Heart beat
Knee jerk
Breathing
Playing game
3195. In neurons the message is transmitted across synapse in the form of chemical messenger called:
Communication
Neurotransmitter
Nerve Impulse
Noci receptors
3196. Microscopic gap between two neurons is called:
Synapse
Synapsis
collapse
Synaptic knob
3197. GABA is an example of:
Enzyme
Excitatory neurotransmitter
Inhibitory neurotransmitter
Hormone
3198. What is the fate of neurotransmitters after provoking impulse in postsynaptic membrane?
Stay in synaptic cleft indefinitely
Recycled in synaptic cleft
Delayed by enzyme
Taken up by post synaptic membrane
3199. Diffusion of ----- across the post synaptic membrane causes it to depolarize:
Calcium ions
Chloride ions
Potassium ions
Sodium ions
3200. The neurotransmitter ------- is hydrolyzed by mono-amine oxidase:
Acetylcholine
Adrenaline
Glutamate
Serotonin
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