Nervous system Flashcards
Dendrites
Recieve Input(where neurotransmitters binds)
Myelin
Speeds up action potential
Cell body
Organelles for normal function
Axon
Where action potential travels
Termimal
Releases nuerptramdmktters or stimulates muscle
Resting/polarized/normal
Na+ outside
k+ inside
Maintained by sodium potassium pump
Sodium potassium pump
Uses atp to move na+ outside neuron and k+ inside
depolarized
Positive , na+ in k+ out
Voltage gated sodium channels
Sense change in charge, sequentially open
Recoverh
Sodium potassium pump puts ions to rest. Na+ out k+ I’m
Myelin
Insulates cells, lets action potential travel faster
Synaptic cleft
Space between 2 neurons, contains vesicles filled with. Uerotrams,otters
Calcium
Enters terminal when last na+ channel opens, causes vesicles to move and fuse with cell membrane to release neurotransmitters into cleft
Nuerotransmitter
Molecule used as signal between 2 neurons
When neurotransmitter binds to a receptor
Generates action potential