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Questions and Answers
Which division of the nervous system is responsible for sending nerve impulses to slow the heart's rate of contraction?
Which division of the nervous system is responsible for sending nerve impulses to slow the heart's rate of contraction?
Which division of the nervous system is likely to send nerve impulses carrying information about cool temperatures on the skin to the brain?
Which division of the nervous system is likely to send nerve impulses carrying information about cool temperatures on the skin to the brain?
Which division of the nervous system sends nerve impulses to direct movement in skeletal muscles?
Which division of the nervous system sends nerve impulses to direct movement in skeletal muscles?
To which division of the nervous system do the nerve fibers of the optic nerve (Cranial nerve II) most likely belong?
To which division of the nervous system do the nerve fibers of the optic nerve (Cranial nerve II) most likely belong?
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What do ependymal cells do in the CNS?
What do ependymal cells do in the CNS?
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Where are bipolar neurons commonly found?
Where are bipolar neurons commonly found?
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What is the function of acetylcholine in the nervous system?
What is the function of acetylcholine in the nervous system?
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What is the absolute refractory period of a neuron?
What is the absolute refractory period of a neuron?
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What happens if neurons lose the function of acetylcholine esterase?
What happens if neurons lose the function of acetylcholine esterase?
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What do collections of nerve cell bodies outside the central nervous system form?
What do collections of nerve cell bodies outside the central nervous system form?
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What is the role of motor fibers in the nervous system?
What is the role of motor fibers in the nervous system?
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What type of neurons convey information from somatic receptors and special senses to the CNS?
What type of neurons convey information from somatic receptors and special senses to the CNS?
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What determines the stimulus strength in the CNS?
What determines the stimulus strength in the CNS?
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What is the integrative function of the nervous system?
What is the integrative function of the nervous system?
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What is the role of voltage-gated channels in neurons?
What is the role of voltage-gated channels in neurons?
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Do neurons have extreme longevity and are they mitotic?
Do neurons have extreme longevity and are they mitotic?
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What is the principal inhibitory neurotransmitter of the spinal cord?
What is the principal inhibitory neurotransmitter of the spinal cord?
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What is responsible for propelling cellular components along microtubules?
What is responsible for propelling cellular components along microtubules?
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What reflects the time required for neurotransmitter release, diffusion across the synaptic cleft, and binding to receptors?
What reflects the time required for neurotransmitter release, diffusion across the synaptic cleft, and binding to receptors?
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What conducts impulses from the CNS to skeletal muscles?
What conducts impulses from the CNS to skeletal muscles?
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What do astrocytes do in the brain?
What do astrocytes do in the brain?
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What do microglial cells in the CNS become to phagocytize invading microbes and neuronal debris?
What do microglial cells in the CNS become to phagocytize invading microbes and neuronal debris?
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What type of potential describes short distance depolarization?
What type of potential describes short distance depolarization?
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What plays a role in emotional behavior and helps regulate the biological clock?
What plays a role in emotional behavior and helps regulate the biological clock?
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What moves across excitable living membranes, and can open in response to electrical potential changes?
What moves across excitable living membranes, and can open in response to electrical potential changes?
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What is the interior surface of a neuron's plasma membrane like at resting membrane potential?
What is the interior surface of a neuron's plasma membrane like at resting membrane potential?
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What happens when a motor neuron in the body is stimulated?
What happens when a motor neuron in the body is stimulated?
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When can a second nerve impulse be generated?
When can a second nerve impulse be generated?
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Which cells are responsible for regulating the concentration of ions in the chemical environment surrounding neurons?
Which cells are responsible for regulating the concentration of ions in the chemical environment surrounding neurons?
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Which cells are primarily responsible for aiding in the regeneration of damaged nerve fibers in the peripheral nervous system?
Which cells are primarily responsible for aiding in the regeneration of damaged nerve fibers in the peripheral nervous system?
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Which cells are responsible for guiding the formation of synapses between newly developed neurons and other neurons?
Which cells are responsible for guiding the formation of synapses between newly developed neurons and other neurons?
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Which cells are most responsible for removing bacterial infections that cause meningitis in the central nervous system?
Which cells are most responsible for removing bacterial infections that cause meningitis in the central nervous system?
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Which aspect of an action potential is best illustrated by the opening of voltage-gated sodium ion channels due to a threshold stimulus, causing further depolarization?
Which aspect of an action potential is best illustrated by the opening of voltage-gated sodium ion channels due to a threshold stimulus, causing further depolarization?
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What allows for the one-way transmission of action potential down the axon, limits the frequency of action potentials, and stops the depolarization of the axon membrane?
What allows for the one-way transmission of action potential down the axon, limits the frequency of action potentials, and stops the depolarization of the axon membrane?
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During which period of an action potential is a larger than normal stimulus needed to cause another action potential due to the voltage-gated potassium ion channels remaining open long enough to hyperpolarize the axon membrane?
During which period of an action potential is a larger than normal stimulus needed to cause another action potential due to the voltage-gated potassium ion channels remaining open long enough to hyperpolarize the axon membrane?
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What does spatial summation imply?
What does spatial summation imply?
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What does temporal summation imply?
What does temporal summation imply?
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What is the likely result of acetylcholine acting in an excitatory manner?
What is the likely result of acetylcholine acting in an excitatory manner?
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