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Neural Control and Coordination question

2016 · Q1
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Neural Control and Coordination question

2016 · Q1

NEETBiologyNeural Control and CoordinationMCQ+4 / −1
Choose the correct statement.
  1. A
    Nociceptors respond to changes in pressure.
  2. B
    Meissner's corpuscles are thermoreceptors.
  3. C
    Photoreceptors in the human eye are depolarised during darkness and become hyperpolaized in response to the light stimulus.
  4. D
    Receptors do not produce graded potentials.
View written solutionFree

Correct answer: C

Photoreceptors in human eye are unique because they are only type of sensory cells that are relatively depolarised (about –35mV) when it is at rest (i.e., in the dark), and hyperpolarised (to about – 70mV) in response to adequate light stimulus. Nociceptors respond to potentially damaging stimuli that result in pain. Meissner’s corpuscles are a type of mechanoreceptor, responsible for touch sensitivity. Receptors generally produce graded potentials called receptor potentials.

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