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divisions of nervous system - Coggle Diagram
divisions of nervous system
structure
nervous system
peripheral NS
somatic NS
underside of brain
12 pairs neurons
connects CNS to senses
motor/somatosensory cortex
sensory pathways
transmit/recieve senses
motor neurons
direct voluntary movement of skeletal muscles
Autonomic NS
parasympathetic branch
off
store/conserve resources after emergency
return body to natural state
e.g slowing hr
sympathetic branch
on
exposed to threat
prepare body for action
biological changes
increased hr
slows down non-essential processes
e.g digestion
keeps body stable (homeostasis)
central NS
brain
collect/process info
coordinate workings of organs/cells
spinal cord
arc reflex
neural circuit where sensory neuron detects receptor in skin
triggers motor neuron
electrical impulses
response