nervous system and behavior Flashcards
(85 cards)
interactions between two systems
circulatory and respiratory (o2 and nutrients)
how is the central nervous system activated
change in the environment
how does the message travel in the central nervous system
sensory neurons, spinal cord, brain, motor neurons
autonomic nervous system parts
sympathetic and parasympathetic
sympathetic nervous system
fight or flight
parasympathetic
rest and digest
what does the nervous system do
alerts and orders your body
stimulus
touching
response
movement
cell body
holds the nucleus
nucleus
stores dna and rna
mylin sheath
protects and insulates axon
axon
conducting fiber
axon terminals
transmitters
dendrites
receivers
why is the shape of the neuron perfect
more surface area (long and has branches)
analogy for a neuron
telephone wire
sensory neuron
takes in messages to brain and spinal cord
connecting neuron
in brain and spinal cord- connects other neurons
motor neuron
takes messages from CNS to muscles
parts of a neuron where a signal travels
dendrites, cell body, axon, axon terminals
synapse
permits neuron to pass a signal along
how does a signal go across a synapse
neurotransmitter hormones (acetycholine)
what is a neurotransmitter
transmits signals from a synapse to a neuron