Nervous System Flashcards
Where does action potential go into
Dendrites
Where does action potential leave
Axon
Reflexes
Neurons travel through spinal cord, sensory neuron to mother neuron. Brain after
Resting potential
More sodium outside ask on the inside. More potassium inside than outside
Depolarization
Sodium channels opens and sodium moves into the axon
Between depot
Repolarizationwhen most sodium/potassium are in axoplasam
Repolarization
Potassium channels open, potassium diffuses to the outside of the axon
Refractory period
Sodium and potassium reset
What lobe does vision happen in
Occipital
Where does conscious thought happened
Frontal lobe
What is saltatory transmission
Allow more rapid nerve conduction along axon
What is the pump made out of
Protein and needs ATP
GABA
Inhibitory
Dopamine
Exocititory
Norepinephrine
Exocititory
Endorphine
Exocititory
Serotonin
Inhibitory
Five actions of drugs at synapse
Simulates release of neurotransmitter. Block/inhibits release of Nero transmitter. Combine with new transmitter preventing it’s breakdown. Mimes neurotransmitter. Blocks receptors so Neurotransmitters can’t be received
Function of spinal cord
Conducts messages to and from brain
Dorsal root
In
Ventral root
Out
Sympathetic nervous system
Exocititory
Largest part of the brain
Cerebrum
Protective set of membranes around the brain and spinal chord
Meninges
