Effect of stimuli on the secretion of the parotid gland / by P. Butler Stoney.

  • Stoney, P. Butler.
Date:
[1873?]
Catalogue details

Licence: Public Domain Mark

Credit: Effect of stimuli on the secretion of the parotid gland / by P. Butler Stoney. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    blood-pressure, while the height of the wave occasioned by each cardiac pulsation remained much the same (Fig. 2). The pressure continued gradually to rise although the pulse not only became slower and slower, but the oscillations of the mercurial column at each pulsation diminished in ex- tent (Fig. 3). This rise could be due either .to the heart propel- ling a greater quantity of blood into the aorta at each pul- zoo 3° So 10 6o sation, or to the arteries, contracting so as to hinder it from escaping from the arterial into the venous system. The di- minished height of the pulse-wave seems sufficient of itself to negative the former idea, and to show that the increased pressure can only be due to contraction of the arterioles, but