. Smell, taste, and allied senses in the vertebrates . Senses and sensation; Vertebrates. 112 SMELL, TASTE, ALLIED SENSES types of papillae, the fungiform, foliate, and vallate, very generally carry taste-buds (Fig. 25). The fungiform papillae are relatively large knob-like elevations scattered over the dorsum of the tongue. They can be easily seen with the unaided eye and may be readily located and identified. They commonly carry a few taste-buds embed- ded in the epithelium of their free outer sur- faces. In sections of the crowns of these papillae parallel to the surface of the tongue three
. Smell, taste, and allied senses in the vertebrates . Senses and sensation; Vertebrates. 112 SMELL, TASTE, ALLIED SENSES types of papillae, the fungiform, foliate, and vallate, very generally carry taste-buds (Fig. 25). The fungiform papillae are relatively large knob-like elevations scattered over the dorsum of the tongue. They can be easily seen with the unaided eye and may be readily located and identified. They commonly carry a few taste-buds embed- ded in the epithelium of their free outer sur- faces. In sections of the crowns of these papillae parallel to the surface of the tongue three or four or more, rarely six to eight, taste-buds may be identified. In verti- cal section it can be seen that the taste-buds are not indiscriminately scattered over the free surface of the papilla, but are perched on the secondary dermal pa- pillae contained within the papilla proper and that they always reach through the full thickness of the epidermis from the dermal core of the secondary papilla to the free outer surface of the primary papilla itself (Fig. 26). This extension through the whole thickness of the epi- dermi's seems to be a common characteristic of taste- buds, for it is to be noted in them from fishes to man. It is an easy means of distinguishing them from other bud-like receptors such as the lateral-line organs whose. Fia. 25.—Dorsal view of the human tongue showing foliate papillae (f) and vallate papillse (v).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Parker, George Howard, 1864-1955. Philadelphia ; London : J. B. Lippincott Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsensesa, bookyear1922
