Term
| Which of the following is not a function of astrocytes |
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Definition
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Term
| which of the choices below describes the ANS |
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Definition
| motor fibers that conduct nerve impules from the CNs to the skeletal muscles |
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Term
| What does the central nervous system use to determine the strength of stimulus |
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Definition
| frequency of action potentials |
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Term
| The substance released at axon termianls to propagate nervous impulses is a |
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Definition
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Term
| A neuron that has its primary function the job of connecting other neurons is called an |
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Definition
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Term
| Which of the following is false or incorrect |
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Definition
| A nerve impulse occurs if the excitatory and inhibitory effects are equal |
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Term
| Select the correct statement regarding synapses |
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Definition
| The synaptic cleft prevents an impulse from being transmitted directly from on neuron to another |
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Term
| Which of the following correctly describes a graded potential |
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Definition
| amplitude of various sizes |
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Term
| Immediately after an action potential has peaked, which cellular gates open |
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Definition
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Term
| Which of the following will occur when an excitatory postsynsaptic potential is being generated on the dendritic membrane |
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Definition
| a single type of channel will open, permitting simultaneous flow of sodium and potassium |
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Term
| When a sensory neuron is excited by some form of energy, the resulting graded potential is called a |
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Definition
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Term
| Which of the following is not true of graded potentials |
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Definition
| They increase amplitudes as they move away from the stimulus point |
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Term
| Which of the following is true about the movement of ions across excitable living membranes |
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Definition
| Sodium gates in the membrane can open in response to electrical potential changes |
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Term
| A second nerve impulse cannot be generated until |
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Definition
| The membrane potential has been restablished |
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Term
| In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external enviroment? The interior is |
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Definition
| negatively charged and contains less sodium |
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Term
| If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon |
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Definition
| the impulse would spread bi-directionally |
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Term
| Which of the following neurotransmitters inhibits pain and mimicked by morphine, heroin, methadone |
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Definition
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Term
| Which of the following describes the excitatory postsynaptic potential |
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Definition
| short distance depolarization |
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Term
| which brian necleus is the body's "biological clock" |
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Definition
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Term
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Definition
| carry proprioceptive inputs to the cerebellum |
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Term
| Which of the following best describes the cerebrum |
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Definition
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Term
| Which of the following generalization does not describe the cerebral cortex |
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Definition
| the hemispheres are exactly equal in function |
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Term
| If the caudal portion of the neural tube failed to develop properly the |
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Definition
| spinal cord maybe affected |
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