Psych 350
Terms
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- Carry information towards a structure.
- afferent
- Carry information away from a structure.
- Efferent
- A neuron whose anatomy is within a specific brain area.
- Intrinsic
- Bundles of mylinated axons that is carrying information from one area to another in the brain.
- Gray matter
- Clusters of cell bodies and dendrites.
- Gray Matter
- What are the disadvantages of the Blood-brain barrier?
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1. not being able to get drugs into the brain to help it.
2. not being able to increase the brains energy - always open, ions can easily move in and out.
- passive ion channels
- open at a specific membrane potential.
- Voltage dependent (or gated) ion channels
- Differential distribution of ions across the membrane, due to the selective permeability of the membrane to ions through passive channels and Na and K pump.
- concentration gradient
- What are the advantages and disadvantages of resting potential?
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adv.- ready to send signals quickly
disadv.-takes a lot of energy - At or above threshold, you will always get an action potential that looks and acts the same.
- All or None Law
- A drug that increases or mimics neurotransmiter effects.
- Agonist
- Drugs that block neurotransmitter effects.
- Antagonist