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Synapse

Module 4 part 2

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Doreen Pang Mrs. Trainor AP Psychology 7 October 2016 Module 4-2: Neural Communication and Neurotransmitters How Neurons Communicate Neurons are interweaved very intricately hard to see where one ends and another begins Santiago Ram?n y Cajal Concluded that individual neurons functions as independent agents within the nervous system. Charles Sherrington noticed neural impulses were taking too long to travel a neural pathway must be brief interruption in the transition Synapse the junction of Sherrington aka synaptic gap cleft Neurotransmitters when action potential reached the terminals at axon?s end triggers release of chemical messengers How Neurotransmitters Influence Us Are certain nerotrans. found only in specific places?

Myers Psychology Chapter 2 Vocabulary (6th Edition)

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Biological Psychology – Focuses on links between biology and behavior. Neuron – A nerve cell Dendrite – Branching extension, receives messages Axon – Extension of a neuron, sends messages Myelin Sheath – Helps protect and insulate Action potential – A neural impulse, electrical charge that travels down the axon. Threshold – the level of stimulation required to trigger a neural impulse. Synapse – The junction between the axon tip (send) and the dendrite (receive) Neurotransmitters – Chemical messengers that traverse the synaptic gaps between neurons. Acetylcholine – Triggers muscle contractions Endorphins – “Natural morphine”, Pain control and pleasure. Nervous system – Electrochemical communication system of the body
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