Podcast
Questions and Answers
What is the most abundant glial cell in the brain?
What is the most abundant glial cell in the brain?
- Oligodendrocytes
- Astrocytes (correct)
- Ependymal cells
- Radial glia
Which of the following is not a function of a Satellite glial cell?
Which of the following is not a function of a Satellite glial cell?
- Conduction of nervous impulses along axons (correct)
- Regulate the chemical environment
- Supply nutrients to surrounding neurons
- Protect/cushion neuron cell bodies
Which of the following is not characteristic of white matter?
Which of the following is not characteristic of white matter?
- Responsible for modulation of the distribution of action potentials
- It is the tissue through which messages pass between different areas of gray matter
- Made up of neuronal cell bodies (correct)
- Composed of bundles of myelinated nerve cell processes
Which of the following ions does not play a role in creating the transmembrane potential?
Which of the following ions does not play a role in creating the transmembrane potential?
In the resting state of the cell, which ion is found at a concentration of 145 mM in the extracellular fluid?
In the resting state of the cell, which ion is found at a concentration of 145 mM in the extracellular fluid?
How is the resting membrane potential of a cell maintained?
How is the resting membrane potential of a cell maintained?
What causes depolarization of a neuron?
What causes depolarization of a neuron?
What is the definition of an action potential?
What is the definition of an action potential?
What is the definition of a synapse?
What is the definition of a synapse?
What is temporal summation of synaptic potentials?
What is temporal summation of synaptic potentials?
Which of the following is not a class of neurotransmitter?
Which of the following is not a class of neurotransmitter?
The ion that enters a presynaptic axon terminal and that directly causes the release of a neurotransmitter substance from the presynaptic terminal is:
The ion that enters a presynaptic axon terminal and that directly causes the release of a neurotransmitter substance from the presynaptic terminal is:
Any change in a neuron’s membrane potential that moves the membrane potential to a value more negative than the resting potential (e.g. -120mv) is:
Any change in a neuron’s membrane potential that moves the membrane potential to a value more negative than the resting potential (e.g. -120mv) is:
Which of the following is not a function of the autonomic nervous system?
Which of the following is not a function of the autonomic nervous system?
The secretions of the adrenal medulla act to supplement the effects of:
The secretions of the adrenal medulla act to supplement the effects of:
The dryness of the mouth (cotton mouth) that occurs when some people are called upon to give an extemporaneous speech is the result of a:
The dryness of the mouth (cotton mouth) that occurs when some people are called upon to give an extemporaneous speech is the result of a:
Regarding the functions of the autonomic nervous system, an individual at rest, digesting a large meal, would be primarily under the influence of the:
Regarding the functions of the autonomic nervous system, an individual at rest, digesting a large meal, would be primarily under the influence of the:
Postganglionic fibers of the parasympathetic division of the ANS release:
Postganglionic fibers of the parasympathetic division of the ANS release:
