NEUROSC M101A Lecture Notes - Lecture 2: Lingual Papilla, Polycystic Kidney Disease, Insular Cortex
Document Summary
Important for food, find mates, find prey, etc. There are far more unpleasant odors than unpleasant odor. Receptors for taste are primarily on tongue, epiglottis, and upper areas of esophagus. Info from tastetants is send to nuclei (through cranial nerves 7, 9 , 10) > medulla (nucleus of the solitary tract) -> ventral/posterior nucleus of thalamus -> primary gustatory areas (frontal taste cortex, and others) There is also exchange between the solitary tract, hypothalamus, and amygdala. Influencing our behavior to seek food, satiety, pleasure from food, and food aversion. Activated zones on mri in relation to taste cortex. Let"s look at receptors in detail, how they work, where they are located. Most receptors located on surface of tongue (also pharynx, epiglottis) Tongue covered by papilla, different papilla have preference for certain stimuli. The entire surface of tongue is sensitive to different [] of tastetants. We desire fat because these receptors that determine out drive for fatty food.
