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Gustation/Olfactory
Sense of taste/smell
| Question | Answer |
|---|---|
| What is papillae | Visable bumps on tongue |
| What are the 4 types of Papillae | 1. Fungiform 2. Vallate 3. Filiform 4. Folliate |
| Fungiform Shape | Mushroom shaped |
| Vallate Shape | Dome shaped |
| Filiform Shape | Threadlike |
| How many taste buds do fungiform have | ~3 |
| How many taste buds do vallate have | ~250 |
| How many taste buds do Filifrom have | 0 |
| What type of tissue is the gustatory cells | Stratified Squamous Epithelium |
| What are taste hairs | Microvilli that extend into the surrounding fluids through a taste pore |
| What does a taste pore contain | Taste receptors |
| What cranial nerves does the taste sensory neurons project into | VII Facial, IX Glossopharyngeal, X Vagus |
| What are supporting cells | Similar in apprerance to Gustatory cells but no microvilli with sensory receptors |
| What are basal cells (taste) | Stem cells that always divide to replace gustatory cells every 7-10 days |
| What part of the tongue does the Facial (VII) innervate | Anterior 2/3 |
| What part of the tongue does the Glossopharyngeal (lX) innervate | Posterior 1/3 |
| What part of the tongue does the Vagus (X) innervate | Palate, Pharynx, epiglottis |
| What are olfactory receptor cells | Bipolar neurons with 20 cilia called olfactory hairs |
| How do olfactory cells regenerate | Basal cell division |
| How long to olfactory cells live | 60 days |
| Where do the axons pass through on olfactory cells | The cribiform plate |
Created by:
Destynelamar
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