The brain and the nervous sytem

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A brief change in the electrical charge of a neuronal membrane; the physical basis of the signal that travels the length of the neuron.
Action potential
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Nerves that carry messages inward toward the central nervous system.
Afferent neurons
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Drugs that enhance a neurotransmitter's activity.
Agonists
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The law that all action potentials have the same strength and speed regardless of the triggering stimulus.
All-or-none law
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Drugs that impede the activity of a neurotransmitter.
Antagonists
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A serious disturbance in beginning or carrying out voluntary movements.
Apraxia
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The division of the peripheral nervous system that receives information from and controls the internal organs.
Autonomic nervous system
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The brain region at the top of the spinal cord that includes the medulla and the pons.
Brain stem
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The brain and spinal cord.
Central nervous system
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Nerves that carry messages outward from the central nervous system.
Efferent Neurons
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A record of the brain's electrical activity recorded by placing electrodes on the scalp.
EEG
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A technique for examining brain function by measuring blood flow and oxygen use within the brain.
fMRI
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A temporal lobe structure that plays a pivotal role in learning and forming new memories.
Hippocampus
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Neurons that are neither afferent nor efferent, but instead carry information from one neuron to another.
Interneurons
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A neuroimaging technique that documents the effects of strong magnetic pulses on the molecules that make up brain tissue. A computer then assembles this information into a picture of brain structure.
MRI
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A specialized cell in the nervous system that accumulates and transmits information.
Neuron
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The division of the peripheral nervous system that controls the skeletal muscles and transmits sensory information.
Somatic nervous system (SNS)
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The division of the autonomic nervous system that mobilizes the organism for physical exertion
Sympathetic branch
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Other cards in this set

Card 2

Front

Nerves that carry messages inward toward the central nervous system.

Back

Afferent neurons

Card 3

Front

Drugs that enhance a neurotransmitter's activity.

Back

Preview of the front of card 3

Card 4

Front

The law that all action potentials have the same strength and speed regardless of the triggering stimulus.

Back

Preview of the front of card 4

Card 5

Front

Drugs that impede the activity of a neurotransmitter.

Back

Preview of the front of card 5
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