nervous system Flashcards
2 parts of nervous system
central nervous system
peripheral nervous system
central nervous system
brain and spinal cord
peripheral nervous system
vast network of nerves that carry messages between CNS and the rest of the body
neuron
nerve cell
sensory neuron
takes message from sense organ to CNS
inter neuron
carries message between sensory and motor neurons
motor neuron
carry message from CNS to effector
cerebrum
controls voluntary movement eg thinking and memory
cerebellum
controls muscular co-ordination
medulla oblongata
controls involuntary movements eg swallowing and breathing
thalamus
relays all incoming messages
hypothalamus
regulates internal environment
parkinsons
failure to produce neurotransmitter dopamine
trembling hands/legs and shuffling gate
drugs to stimulate or mimic dopamine
synapse
a region where 2 neurons come into close contact
synaptic cleft
gap between 2 neurons at a synapse
