Physiology and biochemistry in modern medicine . activ-ity to the blood supply have been made by experiments in which glandswere artificially perfused outside the body. When the submaxillarygland of the dog is perfused with oxygenated Ringers solution, stimula-tion of its nerve supply does not produce the usual secretion, but if theRingers solution is mixed with blood plasma, the nerve stimulation has itsusual effect for a short time. Although no secretion occurs whenoxygenated Ringers solution is perfused alone, the usual vascularchanges still occur in the gland. The results seem to indicate
Physiology and biochemistry in modern medicine . activ-ity to the blood supply have been made by experiments in which glandswere artificially perfused outside the body. When the submaxillarygland of the dog is perfused with oxygenated Ringers solution, stimula-tion of its nerve supply does not produce the usual secretion, but if theRingers solution is mixed with blood plasma, the nerve stimulation has itsusual effect for a short time. Although no secretion occurs whenoxygenated Ringers solution is perfused alone, the usual vascularchanges still occur in the gland. The results seem to indicate that thepresence of some constituent of the blood plasma is essential for thechange in the permeability of the cell wall necessary for the process ofsecretion. Similar results have been obtained during artificial perfusionof the pancreas when secretin was used as the stimulus. CONTROL OF GLANDULAR ACTIVITY Having outlined the general nature of the changes occurring in glandcells during their activity, Ave may now proceed to study the nature of. Center for cranial secretory fibers Center for iw^jgigvasodilator nerves- Facial nervejvVJ///).Cerebellum^x^Glossopharyngeal, nerve Medulla oblongataParotid gland
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Keywords: ., bookcentury1900, bookdecade1910, bookpubli, booksubjectphysiology
