Special Senses / VISUAL EXPLAINER
Can Smell Receptor Neurons Be Replaced?
Basal progenitor populations in olfactory epithelium can generate new sensory neurons. These neurons have a sensory end facing mucus and an axon extending below the epithelium, but renewal capacity does not guarantee recovery of smell.
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What the illustration shows
English anatomy poster on a dark navy background titled Can Smell Receptor Neurons Be Replaced? A dimensional olfactory epithelium cutaway shows blue mucus above peach supporting cells, cyan receptor neurons with apical sensory cilia, gold basal progenitors near a purple basement membrane, and blue axons extending below. Corrected leaders distinguish the gold basal cell from the adjacent axon and identify the basement membrane band. Three lower panels show a basal progenitor, an immature neuron with developing processes and a mature bipolar receptor neuron. Arrows indicate a simplified lineage, not a fixed replacement time. A prominent statement says renewal capacity is not a guarantee of smell recovery. Gold AllHumanBody.com and the complete slogan appear on a plain navy footer. Colors, glow, cell shapes, numbers and relative scales are illustrative, not measured light emission or a full histological map.
How to interpret this poster
- Three panels simplify heterogeneous progenitor populations, intermediate states and cell fates; drawing shape does not identify molecular subtypes.
- No universal replacement interval, human extrapolation from rodent timing or guaranteed recovery after disease or injury.
- Cell numbers, ciliary length, tissue textures and glow are illustrative, not microscopy or measured emission.
- AI-assisted educational illustration; not physician certification, microscopy, a diagnosis or individualized medical advice.
- Fine annotations need enlargement; the full description provides an accessible text alternative.
- Display the full uncropped illustration; do not trim titles, legends or boundary annotations.
AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.
EVIDENCE / CONTEXT
Sources and what they support
- Elsevier Anatomy: Basal epithelial cells of olfactory epithelium ↗
Heterogeneous basal progenitor populations and neuronal differentiation.
- Introduction to Behavioral Neuroscience: 8.3 The Olfactory System ↗
Sensory dendrite/cilia, axonal route, basal progenitors and limits of regeneration.