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  2. Olfactory system - Wikipedia

    en.wikipedia.org/wiki/Olfactory_system

    The olfactory system, is the sensory system used for the sense of smell (olfaction). Olfaction is one of the special senses directly associated with specific organs. Most mammals and reptiles have a main olfactory system and an accessory olfactory system. The main olfactory system detects airborne substances, while the accessory system senses ...

  3. Sense of smell - Wikipedia

    en.wikipedia.org/wiki/Sense_of_smell

    The Lady and the Unicorn, a Flemish tapestry depicting the sense of smell, 1484–1500. Musée national du Moyen Âge, Paris.. Early scientific study of the sense of smell includes the extensive doctoral dissertation of Eleanor Gamble, published in 1898, which compared olfactory to other stimulus modalities, and implied that smell had a lower intensity discrimination.

  4. Primary olfactory cortex - Wikipedia

    en.wikipedia.org/wiki/Primary_olfactory_cortex

    The primary olfactory cortex is in the inferior part of the temporal lobe of the brain. [1] It involves the anterior olfactory nucleus, [2] the piriform cortex, [2] the olfactory tubercle, [2] part of the amygdala, [2] part of the entorhinal cortex, [2] [3] and the periamygdaloid cortex.

  5. Olfactory bulb - Wikipedia

    en.wikipedia.org/wiki/Olfactory_bulb

    The olfactory bulb transmits smell information from the nose to the brain, and is thus necessary for a proper sense of smell. As a neural circuit, the glomerular layer receives direct input from afferent nerves, made up of the axons from approximately ten million olfactory receptor neurons in the olfactory mucosa, a region of the nasal cavity.

  6. Olfactory epithelium - Wikipedia

    en.wikipedia.org/wiki/Olfactory_epithelium

    The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures 5 cm 2 (0.78 sq in) [1] and lies on the roof of the nasal cavity about 7 cm (2.8 in) above and behind the nostrils. [2] The olfactory epithelium is the part of the olfactory system directly responsible for ...

  7. Sense - Wikipedia

    en.wikipedia.org/wiki/Sense

    Sensory organs are organs that sense and transduce stimuli. Humans have various sensory organs (i.e. eyes, ears, skin, nose, and mouth) that correspond to a respective visual system (sense of vision), auditory system (sense of hearing), somatosensory system (sense of touch), olfactory system (sense of smell), and gustatory system (sense of taste).

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  9. Evolution of olfaction - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_olfaction

    The main olfactory sense is derived from the more ancient neural system, broadly present across insects and mammals. [23] This system is specialized to detect volatile, airborne molecules. The accessory olfactory system is the more recently evolved structure, first appearing in the common ancestor of modern amniotes and amphibians.