PSYCO104 Lecture 21: 21 - Nervous System.txt
4 Dec 2014
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The peripheral nervous system (pns) is composed of all the systems that lie outside the brain and spinal cord. The pns contains the parasympathetic, sympathetic, and somatic nervous systems. Collectivly, the autonomic system is composed of the sympathetic and parasympathetic nervous systems, generally. Both kneejerk responses and pain reflexes occur because of reflex arcs running between sense receptors, interneurons, and motor neurons at the level of the spinal cord. Darwin"s claim to fame is that he provided a simple, plausible dates evolution. complexity. Academic interest in differentiation between species back much further. Thales (625-545 bc) is credited with the first recorded theory of. Uniform water is the basic substances, but it is driven towards. Thales failed to provide an explanation of how that change occurs. it is a notable divergence from both the thinking of plato and. Empedocles (495-435 bc)believed animals formed part-by-part, and come out of the sea. Finger + nose = psuedoface? die off. reproduction and.
