A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.
Indicate whether this statement is true or false.
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Question 2) Arrange the primary brain vesicles in the correct anterior to posterior order.
a: Rhombencephalon
b: Mesencephalon
c: Prosencephalon
A. a, c, b
B. b, a, c
C. a, b, c
D. c, b, a
E. c, a, b
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Question 3) A neurotransmitter binds chemically gated ion channels on the postsynaptic cell, causing a depolarization. Functionally, this neurotransmitter can be classified as excitatory.
Indicate whether this statement is true or false.
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Question 4) A scientist observes a particular nerve fiber that is among the fastest at conducting action potentials in the body. Which of the following best describes its likely structure?
A. Large diameter and myelinated
B. Large diameter and unmyelinated
C. Small diameter and myelinated
D. Small diameter and unmyelinated
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Question 5) Saltatory conduction of a nerve impulse occurs only along myelinated axons.
Indicate whether this statement is true or false.
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Question 6) Nerve impulses are transmitted only along exposed portions of an axon.
Indicate whether this statement is true or false.
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Question 7) Any neurotransmitter that generates an IPSP is functionally classified as inhibitory.
Indicate whether this statement is true or false.
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Question 8) Transmission of nerve impulses along myelinated axons requires more energy than transmission along unmyelinated axons.
Indicate whether this statement is true or false.
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Question 9) Neural stem cells in the CNS
A. have no known function.
B. can only form glial cells.
C. can form new neurons throughout the CNS.
D. can form new neurons in only certain portions of the CNS such as the hippocampus.
E. can migrate to the PNS as needed.
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Question 10) The type of neuronal circuit that ensures that we continue to breathe while asleep is a _____________ circuit.
A. converging
B. diverging
C. reverberating
D. parallel-after-discharge
E. None of the choices is correct.
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