Exercise 3: Neurophysiology of Nerve Impulses: Activity 2: Receptor Potential Lab Report
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. Assuming that the resting potential of a sensory neuron is -70 mV, which of the following represents a depolarization?
You correctly answered: c. a change to -60 mV
2. Which of the following is a sensory modality (type of sense)?
You correctly answered: e. all of the above
3. Which of the following is a sensory stimulus?
You correctly answered: d. all of the above
4. Which of the following is true of the response of a sensory neuron to the appropriate sensory stimulus?
You correctly answered: c. both a and b
Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. A very intense stimulus can sometimes stimulate sensory neurons that have evolved for a different modality. Thus, with
a blow to the eye, one "sees stars." In this example the photoreceptors in the eye are responding to
You correctly answered: c. intense pressure.
2. Olfactory receptor neurons respond to low concentrations of chemical odorants because there are membrane proteins in
the receptor ending of this sensory neuron that
You correctly answered: b. can bind and respond to the specific odorant.
3. The sequence of events starting with a sensory stimulus and ending with a change in membrane potential is called
You correctly answered: c. sensory transduction.
4. Starting at a resting membrane potential of -70 mV, a change to which of the following represents the largest receptor
potential?
You correctly answered: d. a change to -50 mV
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