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26 Cards in this Set
- Front
- Back
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Name 3 well know neurotransmitters |
serotonin dopamine GABA Endorphins ACh Norepinephrine |
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When the electrical charge of a cell moves toward zero (action potential) |
depolarization |
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when in side of a neuron is negatively charged relative to the outside (resting potential) |
polarization |
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level of stimulation required to trigger a neural response |
threshold |
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Explain the All-or-none law |
a neuron either fires or does not when it fires, it is always the same strength |
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Explain the difference between antagonist and agonist |
antagonist- blocks neurotransmitters agonist- mimics neurotransmitters |
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Time it takes for the positive ions to be pumped out |
refractory period |
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blocks release of ACh at the neuromuscular junction, causing paralysis (wrinkles) |
botulism (botox) |
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increases the release of excitatory neurotransmitters by blocking the inhibitory neurotransmitter adenosine (antagonist) |
caffeine |
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gap between axon terminal and receiving neurons |
synaptic cleft
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node of ranvier |
gap in the myelin sheath |
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name 2 of the 3 types of neurons |
Sensory* Motor* Interneurons |
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carries information to the next cell |
axon |
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control center of the cell |
nucleus |
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type of neurons that carries information from the brain to muscles and glands |
motor neurons |
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cell that insulates and supports neurons and creates the myelin sheath |
Glial Cells
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explain interneurons |
carry information between other neurons |
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about how many neurons are in the human brain |
100 billion |
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name the main neurotransmitter that deals with emotions |
seratonin |
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location on receptor neuron for specific neurotransmitter |
receptor sites |
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type of neurons that carry information from sensory systems to the brain |
sensory neurons |
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nervous system is -------- built from ---------. |
complexity, simplicity |
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carries information to the cell body from other neurons |
dendrites |
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branch of psychology concerned with the links between biology and behavior |
Biological Psychology |
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the cell body (soma) contains what? |
nucleus |
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chemicals released by the synaptic vesicles |
neurotransmitters |
