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Olfactory pathway Illustration and Icon
Olfactory pathway
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A schematic cross-section of the nasal olfactory epithelium depicts bipolar olfactory sensory neurons (OSNs) situated between supporting cells within the mucosa. Each OSN projects a dendrite with cilia into a mucus layer that captures odorant molecules and an axon that contributes to cranial nerve I (CN I). Red arrows trace airflow delivering odorants to receptor cilia, initiating signal transduction and neural transmission. This cell–tissue hierarchy in the upper nasal cavity is relevant to anatomy, histology, and sensory neurophysiology, illustrating chemosensory detection and processing.
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