Nervous System Gudied Notes Pt.1 Flashcards
2 main divisions of the nervous system
Central Nervous System + Peripheral Nervous System
2 structures that makes up the central nervous system
Brain + Spinal Cord
what is the order of events from stimulus to response
Stimulus, Receptors, Neural Network/Brain, Effectors, Response
_______ nerves bring information into the central nervous system
Afferent/Sensory
_______ nerves deliver info from the central nervous system to the peripheral nervous system
Efferent/Motor
neurons transmit both ______ and _______ signals
Chemical and Electrical
function of a dendrite
Receives messages from other neurons
function of an axon
Carries electrical impulses to axon terminal
how would a signal travel through a neuron if the Myelin Sheath wasn’t present
It would be slower (Continuous Conduction)
sensory neurons are the (input/output)
Input
motor neurons are the (input/output)
Output
how does a nerve signal transmit across the synapse
A neuron affects other neurons by releasing a neurotransmitter that binds to a chemical receptor
at resting potential, the inside of the neuron is ______ charged relative to the outside of the neuron
Negatively
what does it mean when an action potential is “all or none”
Action Potential either fully occur fully or they do not occur at all
