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Ch 1 physic 251
Term | Definition |
---|---|
Neuron | Connection between cells in the brain |
Astrocytes | |
Oligodendrocytes | |
Schwann | |
Microglia | |
Resting and action potential | |
Diffusion | |
K+ | Kept inside of cell because the outside is + |
CL- | Kept outside of cell because the inside is - |
Na+ | Wants to get inside of cell |
Sodium-potassium pump | Keeps Na+ out of cell, takes energy |
Mnemonic | |
Directional terms | |
Forebrain structures | Telencephalon(cortex limbic) Diencephalon(thalamus, hypothalamus, pituitary) |
Midbrain structures | Mesencephalon (tectum & tegmenjtum). Myelincephalon (medulla) |
Hindbrain structures | metencephalon (cerebellum and pons) Myelincephalon (medulla) |
LGN | Vision |
MGN | Hearing |
Drug definition | Not needed for body to function, changes cell functioning |
Transporter molecules | |
Antagonist | slows/stops ion channels from opening |
Agonist | helps/boosts ion channels to open |
Reuptake | drugs mess with this to create agonist or antagonist effect |
ACh | muscular movement. Inside CNS, plays a role in REM sleep, learning, and memory |
Nicotinic | inotropic-fast |
Muscarinic | metabotropic- slower/long lasting, found mostly in brain |
Glutamate/GABA | amino acids that act as neurotransmitters |
Rods | luminance changes only/night vision |
Cones | day vision/ color vision |
Fovea | Find all cones. Good for seeing color and fine detail |
optic chasm | pathway from the eye to the brain |
Hue/color | wavelength |
Brightness | intensity |
Saturation | purity |
Retinal disparity | how brain uses its 2 eyes to give us 3D vision |
Tonotropic organization | piano keyboard, from high to low |
Place coding | all about what part of basilar membrane is vibrating. Works for higher frequencies |
Rate coding | about how many times the hair cells fire. Works for lower frequencies |
Flex | extend limbs |
contract | relax muscles |
Gamma motor system | modifies force of signals sent from the brain to the muscles. Lets spinal cord do more than the brain |
Nociception | ability to feel pain |