Image from page 84 of "The endocrine organs; an introduction to the study of internal secretion" (1916)
Publisher: London, New York, Longmans, Green, and co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library
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Fio. 43.—Effect on blood-pressure of stimulating the splanchnic nerves. The first rise in blood-pressure is caused by constriction of the vessels of the splanchnic area, the second by out-pouring of adrenalin into the blood. The numbers above the abscissa denote the numberof pulse beats in ten seconds, (v. Anrep.)
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FIG. 44.—The same as in fig. 43, but with the suprarenal capsules removed. Only the rise.ofblood-pressure caused by the direct effect of the stimulation on the vessels of the splanchnicarea is now seen. (v. Anrep.) transformation of the liver glycogen into glucose. This will be referred tomore fully in the next section. Dale has suggested that certain alkaloids (e.g. nicotine and pilocarpine)exert their action on involuntary muscle, not directly, but by stimulatingthe suprarenals to increased activity. This has also been shown to beprobably true for morphia, chloroform, and ether by Elliott; the effectappears to be brought about through the splanchnic nerves. RELATIONS OF THE SUPRARENALS WITH OTHER ENDOCRINE ORGANS AND SECRETING GLANDS Ott and Scott state that various organ extracts, viz., thyroid, parathyroid,pituitary, thymus, pancreas, testicle, and ovary, produce an increased Relations of the Suprarenals with Other Endocrine Organs 71 secretion of adrenalin into the blood. The v
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