PS101 Lecture 3: Lecture 3.doc
Document Summary
They receive, intergrate and transmit info (neuro-transmitter: the nerouns is a networks a simple movement is a complex process, goes through the soma to the axon (long thin fibre) Incoming messages (neuro-transmitters) are received by the dendrites. If the sheath is damaged leads to a loss of sensation: ms. The sheath is not developed in babies therefore they are not coordination: when the axons end (terminal button) the space between the dendrite is called the synapse, terminal button at the receiving neuron. Acetlycholine: pain reliever have the same root because they are geared towards muscle action nicotine mimics acetylcholine. Dopamine: too much= schizoprenia, too little= parkinsons, normal= pleasurable emotions. Both have a connection to n and s with too litte= depression. Gaba: initiatory transmitter, puts us to sleep, to many leads to anxiety. The nervous system- how info is processed between the brain and body. Sympathetic ns: fight or flight, mobilizes for emergencies.
