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16 Cards in this Set
- Front
- Back
How can integration of information come into a dendrite: |
Through spatial summation (added together) or through temporal summation (2 inputs arriving together). |
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Describe the charge of a neuron: |
Electrical membrane potential of about -70mv, the inside is negatively charged compared to outside. |
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Where would a graded potential be likely found on a neuron and as a result of what: |
Through the dendrite and a result of the size of the stimulus. |
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Where would an action potential likely be found in a neuron: |
Through the Axon as a result of the electrical potential reaching a threshold. |
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Neurotransmitter: |
Chemicals released by a neuron which trigger a response in another neuron. |
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Reuptake: |
Presynaptic process of reabsorbing its own neurotransmitters after signalling. |
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Agonist: |
Drugs that enhance neurotransmitter activity. |
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Antagonist: |
Drugs that inhibit neurotransmitter activity. |
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Describe the whole synaptic communication route: |
Neural pulse triggers neurotransmitter release from vesicles Neurotransmitter release into post synaptic cleft and bind to to post-synaptic receptors Neurotransmitter then undergoes reuptake. |
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What parts of neurotransmission can be affected by drugs: |
Synthesis, storage, release, binding, reuptake. |
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Dopamine: |
NT that influences movement, motivation and emotion. |
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Acetylcholine: |
NT present at neuromuscular junctions, releases and contracts muscle fibers so i guess it controls muscle movement. |
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Noradrenaline: |
NT controls arousal levels, influences learning and memory. |
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Glutamate: |
NT for rapid transmission of information in the brain, critical for memory and learning. |
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Serotonin: |
NT that controls mood and many mechanisms of sleep. |
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What is a neuron made up of: |
sodium, potassium, chloride and anions. |