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olfactory system, the bodily structures that serve the sense of smell. The system consists of the nose and the nasal cavities, which in their upper parts support the olfactory mucous membrane for the perception of smell and in their lower parts act as respiratory passages.
The olfactory system, or sense of smell, is the sensory system used for olfaction (i.e., smelling). 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 olfactory system comprises a sensory organ (the olfactory epithelium) and specific olfactory brain regions, the first of which is the olfactory bulb. The perception of odours poses interesting and different problems for the nervous system – problems unique to the odorous world.
3 maj 2023 · In humans, the olfactory epithelium is small; approximately 5 cm² in area. There are three cell types contained within the epithelium: the olfactory receptor cells, supporting cells, and basal (stem) cells.
8 kwi 2024 · The olfactory tract is a bundle of axons of secondary neurons that project from the olfactory bulbs rostrally, to the primary olfactory cortex located in the temporal lobe of the cerebrum.
1 maj 2023 · Function. The olfactory system serves multiple functions in humans. Through direct connection with the limbic system and cerebral cortex, smells intertwine with experiencing emotions and memories. Olfaction also serves a role in shaping behaviors and communication between animals.
17 sie 2021 · The olfactory system enables us to detect odors. Our sense of smell involves nerves, the brain, and sensory organs such as the nose and olfactory bulbs.
