KINESIOL 1Y03 Lecture Notes - Lecture 20: Frontal Lobe, Cochlea, Thalamus
20 Apr 2016
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Document Summary
As air enters nares, into both nasal cavities (r+l), enters the ridges in the nasal cavities which swirls the odorants and sends to olfactory. Helps hold the olfactory epithelial cells to structures below it > i. e. cribriform plate. Tend to bind to chemicals structured similarly, but one receptor can bind to many, making those chemicals smell similar. If mucus is thick (when ur sick), chemicals can"t get dissolved as well to smell it. Primary olfactory cortex> temporal lobe > conscious sense of smell. Smell is the one that doesn"t synapse at the thymus, goes straight to olfactory cortex: medial olfactory area. Frontal lobe> emotional + visceral reactions to smell (like habenula) Adaptation: overwhelming chemicals saturate the chemoreceptors and cause ap"s to happen a lot > eventually we stop interpreting the signals because its been the same for a while. Tongue covered with layer of specialized epithelial cells called papillae > chemoreceptors inside.
