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Related Concept Videos

Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

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Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
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Olfactory Receptors: Location and Structure01:03

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The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
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Olfaction01:25

Olfaction

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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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Osmoregulation in Insects01:47

Osmoregulation in Insects

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Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
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Updated: Dec 27, 2025

Whole Mount Immunolabeling of Olfactory Receptor Neurons in the Drosophila Antenna
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Correction to: Evolution of olfactory circuits in insects.

Zhilei Zhao1,2, Carolyn S McBride3,4

  • 1Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, 08544, USA. zhileiz@princeton.edu.

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
|March 2, 2020
PubMed
Summary

This correction updates a typo from "organisional" to "organismal" in the introduction. The scientific article has been amended for accuracy.

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Area of Science:

  • Biology
  • Genetics

Context:

  • A typo was identified in the introduction of a scientific publication.
  • The term "organisional" was incorrectly used.

Purpose:

  • To correct a typographical error in the published article.
  • To ensure scientific accuracy and clarity.

Summary:

  • The authors have corrected a typo in the introduction, changing "organisional" to "organismal".
  • This correction ensures precise scientific terminology.

Impact:

  • Improves the accuracy and readability of the scientific record.
  • Maintains the integrity of published research findings.