. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. —!, tactile corpuscle; B, Grandry's corpuscle. FIG. 178.—Yater-Pacinian corpuscle. In another series of sensory structures the end of the nerve is club- shaped and is surrounded by a connective-tissue sheath, either simple (cylindrical corpuscles), or in Pacini's (Vater's, fig. 178) and Herbst's corpuscles, the sheath is formed of layers of cells, recalling the coats of an onion, while immediately around the club is a layer of cubical cells. Still another variant is found in Krausse's (corpus- culum b
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. FIG. —!, tactile corpuscle; B, Grandry's corpuscle. FIG. 178.—Yater-Pacinian corpuscle. In another series of sensory structures the end of the nerve is club- shaped and is surrounded by a connective-tissue sheath, either simple (cylindrical corpuscles), or in Pacini's (Vater's, fig. 178) and Herbst's corpuscles, the sheath is formed of layers of cells, recalling the coats of an onion, while immediately around the club is a layer of cubical cells. Still another variant is found in Krausse's (corpus- culum bulboideum) and Meissner's corpuscles, where the nerve, on entering the corpuscle, breaks up into numerous branches which surround an axial core of large cells. It is impossible at present to state with certainty the function of each of these and other nerve-end apparatuses and to say which are connected with the different senses—tactile, pressure, pain, heat and cold, muscular, etc.—which are commonly confused under the term 'touch.' Lateral Line Organs. The lateral line organs occur only in the ichthyopsida and here only during the branchiate stages. They arise as thickenings of the ectoderm on either side of the head in the neighborhood of the ear. From here the thickenings extend in definite lines which determine the. 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 Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
