Question: The loudness, pitch, and timbre of a sound are directly related to the __________, respectively, of the vibrations that produced it.
Answer Choices:
amplitude, frequency, and complexity
amplitude, complexity, and frequency
frequency, amplitude, and complexity
complexity, frequency, and amplitude
Answer: amplitude, frequency, and complexity
Question: Noradrenergic neurons function by releasing
Answer Choices:
Norepinephrine
Epinephrine
Glutamate
GABA
Answer: Norepinephrine
Question: The primary cause of multiple sclerosis appears to be _______________.
Answer Choices:
An autoimmune response to myelin in the central nervous system
Tangled clumps of proteins that disrupt and ultimately kill neurons
A genetic mutation that prevents long-term potentiation in dopaminergic pathways
Reduced levels of GABA in the central nervous system, resulting in a lack of neural inhibition
Answer: An autoimmune response to myelin in the central nervous system
Question: Which of the following structures breaks complex sounds into their component frequencies?
Answer Choices:
The cochlea
The inferior cerebrofascimile
The refractory bulb
The glomeruli
Answer: The cochlea
Question: Drugs that block the reuptake of a neurotransmitter from the synapse are usually
Answer Choices:
agonists of that neurotransmitter.
antagonists of that neurotransmitter.
enzymes of that neurotransmitter.
receptor blockers.
Answer: agonists of that neurotransmitter
Question: Autoreceptors:
Answer Choices:
help regulate neurotransmitter levels in the synapse
help transport neuropeptides from the cell body to the axon terminal
play a key role in the synthesis of GABA and glutamate neurotransmitters
relay signals between ribosomes in the nucleus and ribosomes in the axon
Answer: help regulate neurotransmitter levels in the synapse
Question: Which of the following refers to uncontrolled neuron death, resulting in inflammation and potential damage to neighboring neurons?
Answer Choices:
Necrosis
Apoptosis
Neurogenesis
Meiosis
Answer: Necrosis
Question: Which of the following are responsible for myelination of axons in the peripheral nervous system?
Answer Choices:
Schwann cells
oligodendrocytes
astrocytes
vesicles
Answer: Schwann cells
Question: Which of the following are synthesized from tyrosine?
Answer Choices:
monoamines
indolamines
catecholamines
amino acids
Answer: catecholamines
Question: Which of the following best describes collateral sprouting?
Answer Choices:
When one neuron dies, adjacent neurons sometimes grow axonal extensions that take over the newly vacant postsynaptic regions.
Drug addicts develop increased levels of tolerance after repeatedly abusing addictive substances.
After fertilization, the zygote divides into a vast array of different cell types.
Unused synapses are pruned in adolescence to increase efficiency and specificity of the nervous system
Answer: When one neuron dies, adjacent neurons sometimes grow axonal extensions that take over the newly vacant postsynaptic regions.
Question: The _________ convergence of ______ receptors in the retina makes them more functional in low-light situations, but less accurate overall.
Answer Choices:
high, rod
low, rod
high, cone
low, cone
Answer: high, rod
Question: Myelination
Answer Choices:
causes neural degeneration.
penetrates the blood brain barrier.
occurs only on Schwann cells.
increases the speed of axonal conduction.
Answer: increases the speed of axonal conduction