PSYC BC 1119y Lecture Notes - Lecture 4: Olfactory Bulb, Postcentral Gyrus, Frontal Lobe
4 Nov 2015
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Pns composed of cranial nerves, spinal nerves, +autonomic nervous system. 12 pairs sensory=bringing sensation into body, motor=providing input to muscles. Nerve, type, function: olfactory, sensory, sense of smell. Trochlear, motor, eye musculature: trigeminal, sensory+motor, chewing+facial sensation. Horizontal: looking down on person from the ceiling. Sympathetic nervous system: activation prepares body for action. Parasympathetic nervous system: activation prepares body for rest. Arises from cranial and sacral areas- also signals preganglionic+then postganglionic- uses acetylcholine for preganglionic and postganglionic signal. Enteric nervous system: regulates function of the gut-moving food+waste through the system (approx. White matter (myelin) vs. gray matter (cell bodies) Gyrus (ridge) vs. sulcus or fissure (furrow- spaces between ridges) The cerebral cortex is divided into 4 cortical lobes- cortex=the lobes of the brain. 4. frontal lobe (motor) parietal lobe (somatosensory) temporal lobe (hearing, smell, learning+memory) occipital lobe (vision) Sylvian fissure- deep furrow- demarcates temporal lobe from frontal+parietal. Central sulcus separates frontal lobe from parietal lobe.
