. Biologie der Wirbeltiere: eine vergleichende Studie des Menschen und seine tierischen Verbündeten. Wirbeltiere; Wirbeltiere -- Anatomie; Anatomie, Vergleichende. 782 Biologie der Wirbeltiere die Anzahl der Geschmacksknospen zu jedem vallate Papille variiert stark in unter- schiedlichen Säugetiere. Hessen hat geschätzt, dass Schafe haben 480; Kühe, 1760; und Schweine, 4760. Eine Kuh, die etwa 20 Papillen, wäre somit rund 35.000 Geschmacksknospen besitzen, während eine Giraffe, die bekanntlich über 30 Papillen zu haben, wahrscheinlich wäre noch mehr großzügig ausgestattet werden. Stahr hat die interessante Beobachtung, dass die Knospen auf t Geschmack

• Bildanbieter: Library Book Collection / Alamy Stock Foto
• Bild-ID: RHJJ0T
• Dateigröße: 7,2 MB (201,8 KB Komprimierter Download)
• Freigaben (Releases): Model - nein | Eigentum - nein
• Format: 1924 x 1299 px | 32,6 x 22 cm | 12,8 x 8,7 inches | 150dpi

Weitere Informationen

Dieses Bild ist ein gemeinfreies Bild. Dies bedeutet, dass entweder das Urheberrecht dafür abgelaufen ist oder der Inhaber des Bildes auf sein Urheberrecht verzichtet hat. Alamy berechnet Ihnen eine Gebühr für den Zugriff auf die hochauflösende Kopie des Bildes.

Dieses Bild kann kleinere Mängel aufweisen, da es sich um ein historisches Bild oder ein Reportagebild handel

. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. 782 Biology of the Vertebrates The number of taste buds to each vallate papilla varies greatly in dif- ferent mammals. Hesse has estimated that sheep have 480; cows, 1760; and pigs, 4760. A cow, having about 20 papillae, would consequently possess approximately 35, 000 taste buds, while a giraffe, which is known to have over 30 papillae, would probably prove to be still more generously endowed. Stahr has made the interesting observation that taste buds on the tongue of the domesticated white rat are considerably reduced in number as com- pared with those of the wild rat that works for a living. In man there is an oval area on the dorsal surface of the tongue that is free from taste buds, as is also the under side of the tongue (Fig. 684). That the sense of taste in man is degenerating is proved not only by the fact that taste buds are more widely distributed during the fifth to the seventh months of fetal life than in the adult, but also by the fact that the inner surfaces of the cheeks respond to taste far more keenly in children than in older persons. (c) Classification.—The subjective classification of gustatory sensations into pleasant, unpleasant, indifferent, or absent is better replaced by an objective grouping according to the types of gustatory stimuli. Four such categories may be accepted as demonstrable, namely, sweet, salty, sour, and bitter. Intergrades probably occur, and there is no doubt that confusion often results, particularly with olfactory and tactile stimuli. Thus when one speaks of a "slimy" or a "gritty" taste, he is re- ferring in reality to tactile stimulation, while the so-called "taste" of onions, wine, coffee, tobacco, tea, fruits, and spices is largely a matter of olfactory stimulation. Most "flavors" which are commonly associated with the sense of taste aris

Stockbilder mithilfe von Tags suchen

• bookcentury1900
• booksubjectanatomycomparative
• booksubjectverte