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Updated: Aug 12, 2026

Technique to Collect Fungiform (Taste) Papillae from Human Tongue
Published on: September 19, 2010
Angioarchitectural structure of the fungiform papillae on rabbit tongue anterodorsal surface
K Ojima1, T Takahashi, S Matsumoto
1Department of Physiology, School of Dentistry at Tokyo, Nippon Dental University, Japan.
Abstract:
The relationships between the functional and morphological characteristics and the positional difference of the microvascular cast specimen (MVCS) of the fungiform papillae (FuP) on the antero-dorsal surface of the rabbit tongue were examined and compared using a scanning electron microscope (SEM). The sporadic FuPs scattered among the numerous small filiform papillae (SfP) were found to be distributed irregularly over the antero-dorsal surface. FuPs consisted of the ascending and descending capillary loops, forming margins of the central opening at the top of FuP. They resembled flower-like configurations (carnations), the petals of which ranged from eight to twelve, and they were larger in width and more complex in shape than SfPs with morphological differences. FuPs can be classified into three types: type I (consisting of eight petals), type II (ten petals), type III (twelve petals) according to the shape of FuP, and to the petal number of the flower-like aspect on the eight points of MVCS of FuPs observed by SEM. These results suggest that the petals of the ascending and descending capillary loops of FuP expanded the flower-like figure, increased in the surface areas and effectively play a role in receiving the sense of taste.
Insights
Rabbit tongue fungiform papillae (FuP) have unique flower-like microvascular structures. These structures, with 8-12 petals, enhance surface area for taste perception.
Area of Science:
- Morphology and vascular anatomy
- Sensory organ research
- Comparative histology
Background:
- Fungiform papillae (FuP) are key taste structures on the tongue.
- Understanding their microvascular morphology is crucial for taste function.
- Previous studies have not fully detailed FuP microvascular casting.
Purpose of the Study:
- To examine and compare the microvascular cast specimens (MVCS) of rabbit fungiform papillae (FuP).
- To correlate functional and morphological characteristics with positional differences.
- To classify FuP based on their microvascular structure.
Main Methods:
- Scanning electron microscopy (SEM) was used to analyze MVCS of FuP.
- Microvascular casts of FuP on the antero-dorsal surface of rabbit tongues were prepared.
- Morphological characteristics, including petal number and shape, were documented.
Main Results:
- FuPs are sporadically distributed among smaller filiform papillae (SfP) on the rabbit tongue.
- FuPs exhibit flower-like configurations with 8-12 'petals' formed by capillary loops.
- FuPs are larger and morphologically more complex than SfPs, with three distinct types identified based on petal number.
Conclusions:
- The petal-like structures of FuP microvasculature increase surface area.
- This increased surface area likely enhances the reception of taste stimuli.
- SEM analysis of MVCS provides detailed insights into FuP morphology and function.
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