1 / 28

Understanding Chemoreception: Olfaction and Gustation in Sensory Perception

Discover the intricate mechanisms of olfaction and gustation, exploring nasal cavity structures to taste bud histology. Learn about olfactory receptors, gustatory pathways, and the sensory experience of smell and taste. Delve into the impact of chemoreception on the limbic system and sensory disorders like glossitis and tongue cancer.

sarambula
Download Presentation

Understanding Chemoreception: Olfaction and Gustation in Sensory Perception

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Special Senses Chemical Senses

  2. Olfaction

  3. Nasal Cavity

  4. Nasal Bones: Models

  5. Nasal Bone: Drawings

  6. Nasal Cavity Lining

  7. Olfactory Epithelium Location

  8. Olfactory Mucosa Olfactory Receptor Cells (OC) Basal Cells (BC) Sustentacular Cells (SC)

  9. Olfactory Bulb

  10. Olfactory Modalities • Aromatic • Fragrant • Repulsive • Ethereal • Resinous • Spicy • Burned • Putrid Gaseous or Volatile Liquids 16 Chemical Elements produce Odor Sensation

  11. Smell Physiology

  12. Olfactory Tract

  13. CN I and Rhinencephalon

  14. CN 1 entering Base of brain at Olfactory Gyrus

  15. Olfaction and the Limbic System

  16. Gustation

  17. Tongue Anatomy

  18. Tongue Papilla

  19. Taste Bud Histology

  20. Taste Bud Stimulus

  21. Taste Maps • Sweet • Responds to sugars • Responds to AA • Sour • Responds to H+ • Salty • Responds to NaCl, salts • Responds to metal ions • Bitter • Responds to alkaloids

  22. Areas of Innervation

  23. Temperature Concentration Order Interaction Taste Sensations

  24. Nerves for Taste: CN VII, IX, XII • Chorda tympani of CN 7 • Lingual Branch of CN 9 • Pharyngeal Branch of CN 10 • Myelinated Delta A fibers go to the Nucleus Tractus Solitarius  Thalamus  Parietal Lobe

  25. Gustatory Pathway • CN VII, IX, X • Medulla • Thalamus • Parietal Lobe: Gustatory Cortex

  26. Effects on Taste • Smell • Temperature of food • Texture of food • Visual appearance of food

  27. Problems Glossitis Cancer of the Tongue

More Related