Smell Notes

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4 Terms

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Olfactory bulb

  • Located in the forebrain

  • Receives input about odors detected by cells in nasal cavity

2
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Olfactory Nerves

  • Called CN1

  • First cranial nerve within the head

  • Sends sense of smell to the brain​

  • Olfactory Receptor end located in the nassal cavity

3
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Nasal Concha/Turbinates

  • Long shelf of bone shaped like a sea shell

  • Divide nasal cavity into 4 air passages​

  • Force inhaled air along large surface area

  • Cleans and warms air in preparation for lungs​

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How we smell​

  • Odor is caused by volatile chemical compounds

  • ​Molecules bind to receptor proteins on the cilia of olfactory neurons​