. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. *':W*^f? the gland on Ouy are oon- d, it is impod- >f â timulAtion, arterial dila- ulla predding center i« ren- At all erenti, jrmpani nerve teqrmpathelio change ii not r acoompaniea I animal after nerve, analo- reoently dead 5. The ohar- â timulated, en rmallirin the k through the ii called into «flexl7 by ex- ne of eventfk libited by the »z (taite oen- vel from the lug
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. *':W*^f? the gland on Ouy are oon- d, it is impod- >f â timulAtion, arterial dila- ulla predding center i« ren- At all erenti, jrmpani nerve teqrmpathelio change ii not r acoompaniea I animal after nerve, analo- reoently dead 5. The ohar- â timulated, en rmallirin the k through the ii called into «flexl7 by ex- ne of eventfk libited by the »z (taite oen- vel from the lug centers in that the oorti- fical iwooeeBes ite antagonist cted through I on the oen- n the cells, is can act long )r, prove that rand* of this rHo secretion are not con- of the cells DiaBSnON OP FOOft. 816 when gone wrongâpassed from under the dominion of the nerveKjenters. Secretion ia a part of the natural life-provesses of gland-cellsâwe may say a series in the long chain of pro- oesseii which are indispensable for the health of these cells. They must be either Necreting cells, or have no place in the nat- ural order of things. It is to be especially noted that the secre- tion of saliva continues when the pressure in the ducts of the gUnd is greater than that of the blood in its vessels or even of the carotid; so that it seems possible that over-importance has been attached to blood-pressure in secretory processes gen* erally. It nwy, then, be safely assumed that formation of saliva re- sults in consequence of the natural activity of certain cells, the processes of which are correlated and harmonised by the nerv- ous system; their activity being accompanied by an abundant supply of blood. The actual outpouring of saliva depends usu- ally on the establishment of a nervous reflex arc. The other glands have been less carefully studied, but the parotid is known to have a double nervous supply from the cerebro- spinal and the sjrmpathetic systems. It would appear
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
