Skip to ContentGo to accessibility page

Key Terms

8.1 The Chemical Senses are Several Distinct Sensory Systems

Signal integration, smell, taste, flavor, gustation, nutrients, olfactory system, pheromones, chemesthesis, retronasal olfaction, orthonasal olfaction

8.2 The Gustatory System

taste bud, tongue, papillae (filiform, foliate, fungiform, circumvallate), pharynx, taste pore, taste receptor cell (TRC), type 1 taste receptors (Tas1Rs, T1Rs), type 2 taste receptors (Tas2Rs, T2Rs), type 3 taste receptors (Tas1R3, T3Rs), otopetrin 1 (Otop1), epithelial sodium channels (ENaC), fat taste, intragemmal, labeled line coding, across-fiber pattern coding, chorda tympani branch of the facial (VII) nerve, glossopharyngeal (IX) nerve, nucleus of the solitary tract (NTS), chemotopic map, gustatory nucleus, primary gustatory cortex (GC), ventral posterior medial nucleus of the thalamus (VPMpc), secondary gustatory cortex, conditioned taste aversion, sensilla, gustatory receptor neurons (GRNs)

8.3 The Olfactory System

olfactory epithelium, odorants, turbinates, olfactory sensory neurons, supporting cells, basal cells, olfactory receptors, Golf, adenylyl cyclase III (ACIII), cyclic nucleotide gated (CNG) channels, calcium-activated chloride channels (CaCC), olfactory bulb, glomerulus, mitral cells, tufted cells, piriform cortex, lateral olfactory tract, anterior olfactory nucleus (AON), anterior commissure, amygdala, entorhinal cortex, adaptation, accessory olfactory system, vomeronasal organ, accessory olfactory bulb, anosmia, Alzheimer’s disease, Parkinson’s disease, ACE2, parosmia

8.4 Chemethesis, Spices, and Solitary Chemosensory Cells

Free nerve endings, common chemical senses, somesthesis, olymodal nociceptors, Transient Receptor Potential (TRP) channels, thermal-TRPs, solitary chemosensory cells (SCCs)

8.5 Influences That Shape Perception of Smell and Flavor

Mouthfeel, single nucleotide polymorphism (SNP), TAS2R38, supertasters/non-tasters/tasters, specific anosmia
Citation/Attribution
Reuse and redistribution of this content in digital or print format:
  • This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's prior written permission.
  • This book uses the Creative Commons Attribution-NonCommercial-ShareAlike License, which means that you can reuse and modify the material only for noncommercial purposes, must attribute OpenStax, and must distribute any derivative works under the same license.
  • Any commercial printing of this textbook, including using a local or custom printer, must be approved by OpenStax, and proper citation provided.
  • OpenStax-copyrighted images, activities, assessments, and similar components of this book are subject to the same licensing – CC-BY-NC-SA. They can be used for noncommercial purposes with attribution. Commercial use requires permission.
  • Permission requests: Anyone who intends to incorporate this content (including text, images, and other components) into large language models, use it in AI offerings, use it commercially (including in print), and/or has questions about another use case is welcome to complete our reuse request form.
Attribution information
  • If you are redistributing all or part of this book in a noncommercial print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/introduction-behavioral-neuroscience/pages/1-introduction

  • If you are redistributing all or part of this book in a noncommercial digital format, then for every page that includes OpenStax content, you must license the derivative work under the same CC-BY-NC-SA license as the original, and include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/introduction-behavioral-neuroscience/pages/1-introduction

Citation information

The information below includes the information needed to generate citations in most major styles (APA, MLA, etc.); you must reformat and organize the information as needed to fit the requirements of the style. Use the information below to generate a citation. We recommend using a citation tool such as this one.

© Apr 23, 2026 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo, and Rice University name, and Rice University logo trademarks, or wordmarks are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.