BIOL 1080 Study Guide - Final Guide: Cytotoxic T Cell, T Helper Cell, Coronary Artery Disease
8 Dec 2016
School
Department
Course
Professor
Document Summary
Cns- integrates/coordinates input and output and thoughts, emotions, memories (ie hormones in brain) sensory input from receptors > cns > pns motor output through somatic and autonomic system. Autonomic= involuntary; parasympathetic act (restful conditions) vs sympathetic norep (stressful situations) Sensory neurons synapse at spine but not all info > brain ie. re ex arc allows for a rapid re ex w/o delay (1st response) brain receives info not a response, therefore a memory (2nd response = pain recognition) 5 major types of the adult human cns: neurons. Glial/non-neuronal cells: oligodendrocytes (cns) and schwann cells (pns, astrocytes, microglia, ependymal cells, neurons- unidirectional information ow, speed (ms= destruction of myelin sheath) Unmyelinated neurons re 0. 5-2m/s vs myelinated neurons ring 6-120m/s. Either excitatory or inhibitory, based on an overall summation effect of all inputs. The cell body summates the various 1000s of inputs (excitatory and inhibitory), net effect of all these inputs determines if ap is generated in post-synaptic neuron/cell body.
