Flashcards in Chapter 3 Deck (31):
What is a neuron
They are cells in the nervous system that communicate to perform information-processing tasks
What is a dendrite?
recevie information from other nueron and relay to cell body
What is an Axon
carries informationt tp other nuerons, msuclas and glands
what are axon convered in?
What is a glial cells?
To support the axon, and to digest parts of dead neurons.
Form myelin to help axon
Region between the axon of one or more neuron and the dendrites or cell body of another
fundamental to comminvation between nuerons
What are the 3 tyypes pf nuerons
senor, motor, internurons
what are senrosy neurons
recieive informatiion from the external worl and send to the brain via te spical cod
crry singal from the spincal cord to the muslce to prouce movemtn
What are the 2 stages to communicate info between nuerons
what is conduction
movement of an electrical signal within neurons, dendrites
what is transmission
movement of electrical signals from one nuerons to another over the synaps
what is resting potential? and what is the resting potential of a nueron.
Resting potential is the difference between the inside and outside of a neurons cell membrane,
What is action potential
is is an electrical signal that goes along the length of th neurons axon
what is the refactory period?
it is the time following an AP where an new Ap connot be initated
what goes out, what goes in?
Na+ goes out amd K+ go in
connected to internuerons and the cerebellum to the rest of the brain and spinal cord
cerebral cotrex, triganglugar cell body and single dentrid
knoblike structures that branch out from axon and are filled with vesciles containing N+
checms that transmit info across the synpase to receiveing nueron dendtrites
parts of the cell membrane that receieve nuerotransmitters and initiate or prevent new electrical singals
steps in synaptic transmittion
- resting potential
- AP travels down axon to simulate relaaes of NT from vescibles to synpase
- NT binds to receptor sites on dendtrie to post synaptics neiron
-- new Ap initited in the neuron
voluntary motor control
regulation of attention
role un drug addiction
stops firing nuerons
states of vigilanace and danger
regulation of sleep, wakefullness, eating and agressive behavuor
with within pain pathwyas and emotion center