An American text-book of physiology . Fig. 76.—Pancreas of dog during first stage of digestion; alcoiiol, carmine (after Heidenliain). that the gland is discharging its secretion, the granular material is being usedup. After the period of most active secretion—that is, during the tenth tothe twentieth hour after a meal in the case of a dog fed once in twenty-four. Fig. 77.—Pancreas of dog during second stage of digestion; alcohol, carmine (after Heidenhain). hours—the gland-cells return to their resting condition (Fig. 77). New gran-ules are formed, and finally, if the gland is left unstimulat
An American text-book of physiology . Fig. 76.—Pancreas of dog during first stage of digestion; alcoiiol, carmine (after Heidenliain). that the gland is discharging its secretion, the granular material is being usedup. After the period of most active secretion—that is, during the tenth tothe twentieth hour after a meal in the case of a dog fed once in twenty-four. Fig. 77.—Pancreas of dog during second stage of digestion; alcohol, carmine (after Heidenhain). hours—the gland-cells return to their resting condition (Fig. 77). New gran-ules are formed, and finally, if the gland is left unstimulated they fill theentire cell except for a narrow margin at the basal end. Similar results are reported by Kiihne* and Lea from observations madeupon the pancreas cells in a living rabbit. In the inactive gland the outlines ^ TJnter« aus dem physiologischen Insiitut des Universitdts Heidelberg, 1882, Bd. ii. 176 AN AMERICAN TEXT-BOOK OF PHYSIOLOGY. of the iudividiial cells are not clearly distinguishable, but it can be seeu thatthere are two zones, one clear and homogeneous on the side toward the basementmembrane, and one granular on the side toward the lumen. During activitythe secretory tubules show a notched appearance corresponding to the positionsof the cells, the outlines of the cells become more distinct, the granular zonebecomes smaller
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Keywords: ., bookautho, bookcentury1800, bookdecade1890, booksubjectphysiology
