NUR 0012 Lecture 32 Ch. 12 The Central Nervous System: ContinuedOutline of Last LectureI. Ch. 12 the central nervous system cont.: the cerebrumA. CerebrumB. LobesC. Motor areasD. Sensory and association areasOutline of Current LectureI. Ch. 12 the central nervous system cont.A. Sensory areasB. Prefrontal cortexC. Left brain vs. right brainD. 3 major types of white major in cerebrumE. Basal nucleiCurrent LectureI. Ch. 12 the central nervous system cont. ( he has back tracked a bit)A. Sensory areas: mainly in the parietal, temporal and occipital areas1. Larger association areas around them help us to make sense of what we’re seeing, etc. 2. Wernicke’s area: chunk of temporal and parietal lobe important for understanding speech, interpreting writing, reading3. Olfactory bulb and tract: lay on underside of frontal lobeThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.a. Olfaction: only one of our senses that doesn’t have a mandatory stop at thalamus, smell is most ancient senseb. Olfactory cortex: most on temporal a little on frontal, right up against the amygdala: involved in memory4. Gustatory cortex: taste5. Visceral sensorya. Intra-abdominal senses: pretty non-specificb. Referred pain1) Example: gallbladder pain presents itself as pain on your neckB. Prefrontal cortex: involved with learning, recall, personality, abstraction, long term planning, conscience1. Phenius Gage: giant 4 foot bar right through his head, he never passed outa. Became very mean after the incident: started drinking heavily, beating his wife, etc.C. Left brain vs. right brain1. Left brain: analytic, numerical, logical, speech, control of right hand2. Right brain: spatially oriented, artistic, creative, control of left handD. 3 major types of white matter in cerebrum1. White matter made up of myelin2. Projection fibers: project upwards or downwards3. Parasagittal view of fiber tracts: shows association fibers clearly, bundles of axons running in same lobea. Longitudinal fibersb. All communicating in same hemispherec. Commissural fibersE. Basal nuclei: gray matter deep inside cerebrum1. 3 distinct groups of gray mattera. Caudateb. Putamenc. Globus pallidus (deep to putamen): sends output to premotor cortex2. Send and receive input regarding motor movements3. Help to inhibit unwanted motor contractions4. Constant activity going on5. Resting tremors: disorder of basal nuclei6. Basal ganglia: found outside CNS, still active in CNS
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