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The Correct Answer and Explanation is :
To provide an accurate explanation and solution for the microscopic anatomy of taste buds, I would need to access the figure. Since I can’t view the image directly, I’ll offer a detailed explanation and a general guide to the topic.
Correct Labeling for Taste Bud Anatomy
Taste buds are small sensory organs located primarily on the tongue, within papillae. Here’s a breakdown of the key components typically present in diagrams:
- Circumvallate Papillae: These are large, dome-shaped structures found at the back of the tongue. They contain multiple taste buds within their grooves.
- Taste Buds: These are the microscopic sensory organs embedded within the epithelium of papillae. Each taste bud comprises:
- Gustatory Cells: Sensory cells responsible for detecting taste stimuli. They have microvilli (taste hairs) that project into the taste pore.
- Supporting Cells: Cells that surround and support gustatory cells structurally.
- Basal Cells: Stem cells that regenerate gustatory cells.
- Taste Pore: An opening on the surface of the epithelium where the microvilli of gustatory cells interact with dissolved food molecules.
- Basal Epithelium: The deeper layer of cells that anchors the papillae and supports the tissue.
Explanation of Taste Bud Function
Taste buds are responsible for the perception of five primary tastes: sweet, sour, salty, bitter, and umami. When dissolved molecules enter the taste pore, they bind to receptors on the microvilli of gustatory cells. This triggers a signal transmitted via cranial nerves (VII, IX, and X) to the brain’s gustatory cortex for interpretation.
Taste buds are highly specialized for detecting chemical stimuli and undergo regular regeneration, with basal cells differentiating into new gustatory cells every 10–14 days. This regenerative capacity ensures sensitivity to tastes is maintained despite wear from mechanical and chemical stimuli.
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