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59 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Neuron |
A nerve cell; the basic building block of the nervous system. |
Basic building block |
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Dendrites |
A neuron's bushy, branching extensions that receive messages and conduct impulses toward the cell body. |
Receives |
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Axon |
The neuron extension that passes messages thru its branches to other neurons or to muscles or glands. |
Passes |
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Myelin Sheath |
A fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one sausage-like mode to the next. |
Insulates |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
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Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
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Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
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Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
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Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
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Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
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All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
|
|
Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
|
|
All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
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Synapse |
The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft. |
Gap |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
|
|
Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
|
|
All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
|
|
Synapse |
The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft. |
Gap |
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Neurotransmitters |
Chemical messengers that cross the synaptic gals between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether the neuron will generate a neural impulse. |
Messengers |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
|
|
Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
|
|
All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
|
|
Synapse |
The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft. |
Gap |
|
|
Neurotransmitters |
Chemical messengers that cross the synaptic gals between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether the neuron will generate a neural impulse. |
Messengers |
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Reuptake |
A neurotransmitter's reabsorption by the sending neuron. |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
|
|
Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
|
|
All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
|
|
Synapse |
The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft. |
Gap |
|
|
Neurotransmitters |
Chemical messengers that cross the synaptic gals between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether the neuron will generate a neural impulse. |
Messengers |
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Reuptake |
A neurotransmitter's reabsorption by the sending neuron. |
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Endorphins |
Morphine within-natural, opiate like neurotransmitters linked to pain control and to pleasure. |
Runners high |
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Action Potential |
A neural impulse; a brief electrical charge that travels down axon. |
Brief |
|
|
Refractory Period |
A period of inactivity after a neuron has fired. |
Rest |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse. |
Level of |
|
|
All-or-None Response |
A neuron's reaction of either firing (with a full-strength response) or not firing. |
To go or not to go |
|
|
Synapse |
The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft. |
Gap |
|
|
Neurotransmitters |
Chemical messengers that cross the synaptic gals between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether the neuron will generate a neural impulse. |
Messengers |
|
|
Reuptake |
A neurotransmitter's reabsorption by the sending neuron. |
|
|
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Endorphins |
Morphine within-natural, opiate like neurotransmitters linked to pain control and to pleasure. |
Runners high |
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Agonist |
A molecule that by binding to a receptor site stimulates a response. |
Good guy; mimics |
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Acetylcholine (ACh) |
Enables muscle action, learning, and memory. |
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Acetylcholine (ACh) |
Enables muscle action, learning, and memory. |
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Dooamine |
Influences movement, learning, attention, and emotion. |
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Acetylcholine (ACh) |
Enables muscle action, learning, and memory. |
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Dooamine |
Influences movement, learning, attention, and emotion. |
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Serotonin |
Affects mood, hunger, sleep, and arousal. |
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Acetylcholine (ACh) |
Enables muscle action, learning, and memory. |
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Dooamine |
Influences movement, learning, attention, and emotion. |
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Serotonin |
Affects mood, hunger, sleep, and arousal. |
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Antagonist |
A molecule that, by binding to a receptor site, inhibits or blocks a response. |
Bad guy; blocks |
