3.9 PEx: Neurophysiology of Nerve Impulses part 2

Part A
A weak, subthreshold stimulus will result in _______.
    release of neurotransmitter at the axon terminal of the sensory neuron
    an action potential at the receiving end of the neuron
    a small depolarization at the receiving end of the interneuron
    a small depolarization at the receiving end of the neuron

Part B

Which stimulus was at or above threshold?
    moderate
    weak
    strong
    the moderate and strong stimuli

Part C

Increasing the strength of the stimulus applied to the sensory receptor increased _______.
    the frequency of action potentials in the sensory neuron, the amount of neurotransmitter released at the axon terminal of the sensory neuron and the frequency of action potentials in the interneuron
    the amount of neurotransmitter released at the axon terminal of the sensory neuron
    the frequency of action potentials in the interneuron
    the frequency of action potentials in the sensory neuron
    the frequency of action potentials in the sensory neuron and the amount of neurotransmitter released at the axon terminal of the sensory neuron

Part D

An excitatory postsynaptic potential occurs _______.
    at the receiving end of the interneuron
    at the receiving end of the sensory neuron
    at the axon terminal of the sensory neuron
    at the axon terminal of the interneuron