Summary Study notes Nervous System

er vous system
co ordination

changes that occur in the external or internal environment of the
organism


co ord involves :
-




stimulus : external or internal environmental change that evokes
a reaction

control centre : CNSC brain + spinal chord )

response effect : reaction to the stimulus


how does INFO flow through body

stimulus detected by receptors in sense organs


converted to impulse by receptors


Impulse travels to CNS V10 a sensory neuron


sensory neuron synapses with Inter neuron in CNS


Inter neuron synapses with motor neuron


motor neuron conducts impulse to effector ( muscle / Gland )


appropriate response occurs


DIVISIONS
NS


CNS PNS
brain sensory nerves
spinal chord motor nerves

, Brain




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spinal chord




1
nerves




I
.




BBB CNS


tbh PNS