PSY 2301 Lecture Notes - Lecture 6: Otto Loewi, Vagus Nerve, Autonomic Nervous System
23 Nov 2016
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Document Summary
Role of synapses in learning and memory. The basis of neural communication in a hearbeat. Role of the the vagus nerve and the neurotransmitter acetylcholine (ach) in slowing heart rate. Chemical messenger that acts as a hormone to mobilize the body for fight or flight during times of stress and as a neurotransmitter in the central nervous system. Neurotransmitter found in the brain and in the parasympathetic division of the autonomic nervous system. Chemical released by a neuron onto a target with an excitatory or inhibitory effect. Outside the cns, many of these chemicals circulate in the blood stream as hormones. Projects a beam of electrons through a very thin slice of tissue. Varying structure of the tissue scatters the beam onto a reflective surface where it leaves an image, or shadow, of the tissue. Much better resolution than the light microscope. 1950s: revealed the structure of a synapse for the first time.
