Sensory systems practice problems.pdf

Sensory systems practice problems.pdf - Biol 361 Practice...

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Biol 361 Practice Problems: Sensory systems 1 1. Some insects detect sound using a Johnston’s organ located at the base of their antennae. Consider the similarities and differences in the Johnson’s organ and the mammalian ear. Is the sensory neuron of a scolopidia more similar in function to an inner hair cell or an outer hair cell of the mammalian organ of Corti? Explain. (3 marks) 2. If you close your eyes and press gently on the upper inside corner of your eyelid, you are likely to see a spot or circle of light. a) Explain why you perceive this stimulus as light, even though it is actually a pressure stimulus. (2 marks) b) This test indicates that the eyes can respond (very weakly) to a pressure stimulus. In contrast, mechanoreceptors do not respond to light, no matter how intense the stimulus. Explain why this might be. (2 marks) 3. When you have an ear infection, fluid sometimes builds up in your middle ear, resulting in decreased hearing. Why might this be so? (2 marks) 4.
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  • Fall '13
  • hair cell, Organ of Corti

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