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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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Olfaction01:25

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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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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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Related Experiment Video

Updated: Nov 8, 2025

A Step-by-Step Guide to Mosquito Electroantennography
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Olfaction in Anopheles mosquitoes.

Joanna K Konopka1, Darya Task1, Ali Afify1

  • 1The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, 855 North Wolfe Street, 434 Rangos Building, Baltimore, 21205 MD, USA.

Chemical Senses
|April 22, 2021
PubMed
Summary
This summary is machine-generated.

Understanding mosquito olfaction is key to controlling malaria. This review details Anopheles mosquito smell, from receptors to behaviors, aiding new disease control strategies.

Keywords:
chemosensory receptorshost-seekingmalariaolfactory neuronssensory appendagesvector management

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Area of Science:

  • Entomology
  • Neuroscience
  • Public Health

Background:

  • Mosquitoes, particularly Anopheles species, transmit malaria, causing significant global mortality.
  • Mosquito behavior, including host-seeking and reproduction, is heavily reliant on their sense of smell (olfaction).
  • Targeting mosquito olfaction presents a promising avenue for developing novel malaria control strategies.

Purpose of the Study:

  • To provide a comprehensive review of Anopheles mosquito olfaction.
  • To explore the molecular and neural basis of mosquito olfaction.
  • To connect olfactory mechanisms to mosquito behaviors and discuss implications for vector management.

Main Methods:

  • Literature review synthesizing current research on Anopheles olfaction.
  • Analysis of studies on chemosensory receptors and olfactory pathways in mosquitoes.
  • Examination of behavioral studies linking olfaction to host-seeking, foraging, oviposition, and mating.

Main Results:

  • Detailed overview of olfactory receptors, neurons, and sensory appendages in Anopheles.
  • Identification of key olfactory-guided behaviors crucial for mosquito survival and disease transmission.
  • Discussion of current and potential vector control strategies targeting mosquito olfaction.

Conclusions:

  • A deeper understanding of Anopheles olfaction is critical for effective malaria control.
  • Further research is needed to fully elucidate olfactory mechanisms and translate this knowledge into practical strategies.
  • Targeting the mosquito olfactory system offers a sustainable approach to reduce malaria transmission.