. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SECRETION. 449 '02 inillim. in diameter; those towards the stomach gives off on either side a number of other extremity about '01 millim. Some of branches, which usually redivide, and then Fig. Fi->. Hepatic cells of Helix albolabris. a, 1, 2, two cells from the bottom of the cajcum ; b, 1, 2, two cells more advanced, containing nu- merous oil globules; e, 1, 2, 3, three cells, con- taining larger oil globules; d, a cell distended with oil; e, a cell containing nothing but six deep yellow consistent oil gl
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SECRETION. 449 '02 inillim. in diameter; those towards the stomach gives off on either side a number of other extremity about '01 millim. Some of branches, which usually redivide, and then Fig. Fi->. Hepatic cells of Helix albolabris. a, 1, 2, two cells from the bottom of the cajcum ; b, 1, 2, two cells more advanced, containing nu- merous oil globules; e, 1, 2, 3, three cells, con- taining larger oil globules; d, a cell distended with oil; e, a cell containing nothing but six deep yellow consistent oil globules; f, a cell con- taining a hard yellow mass of fat; g, a cell rup- turing, and its contents escaping; ' h, nuclei of hepatic cells, highly magnified. the fully ripe cells (A, 1, 2) are filled with innumerable minute globules of oil, hardly distinguishable from the granular matter ; others (c, 1,2,3) with globules of a larger size ; some are found with from one to ten or more large, deep yellow, oil globules in the centre ; a few (/') with a hard or crystallised mass of fat in the centre ; and many (d) are distended with oil. By pressing the cells (g) between two plates of glass, the contents will be squeezed out, and the structure will be seen as follows : — the vesicular transparent, amorphous cell-wall, finely granular matter, fat globules, and a granular nucleus (h), mea- suring about '01 millim. and containing a hard transparent nucleolus. A few of the cells contain two nuclei. The blood-vessels, con- sisting of arteries and veins, form a rete around the bulbiform caeca, but do not appear to come in immediate contact with the secreting cells" (loc. cit.). The general plan of struc- ture of the liver of the Cephalopoda is essen- tially the same ; the hepatic ducts and follicles being clustered as in a raceme, and the follicles being crowded with biliary cells. In the Lo/igOy these follicles are described by Dr. Williams (op. cit.), as being themselves sac- cula
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