physioex 9 review sheet neurophysiology of nerve impulses activity 9

Exercise number?

56.Describe what happened when you applied a very weak stimulus to the sensory receptor, i.e. was there an action potential?  How many vesicles were released?

NO RESPONSE AT R3 BECAUSE THE VERY WEAK STIMULUS DOES NOT DEPOLARIZE THE AXON OF THE SENSORY NEURON THRESHOLD.

57.Describe what happened when you applied a moderate stimulus to the sensory receptor, i.e. was there an action potential?  How many vesicles were released?

4 VESICLES RELEASED.

58.Identify the type of membrane potential (graded receptor potential or action potential) that occurred at R1, R2, R3, and R4 when you applied a moderate stimulus.  (Compare/view the response to the stimulus.)

THE STIMULUS INDUCES A GRADED RECEPTOR POTENTIAL AT R1

59.Describe what happened when you applied a strong stimulus to the sensory receptor.  What type(s) of membrane potential were caused?  Were the responses at R1 through R4 all the same?

ACTION POTENTIALS GENERATED AT ALL 4 LOCATIONS

Thanks needed help with this also

Thanks, this helped me also....this exercise is kicking my behind

why the resting membrane potential the same value in both the sensory neuron and the Interneuron?

I have been looking for the same answer.

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