Experimental Physiology
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Quarterly Journal of Experimental Physiology 26.2 pp 155-164
© The Physiological Society 1936
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DIETARY AND EMOTIONAL FACTORS AFFECTING THE BLOOD-PRESSURE OF CATS, OBSERVED BY EXTERIORIZATION OF THE CAROTID ARTERY

E. G. T. Liddell 1 and H. M. Carleton 1

1 The University Laboratory of Physiology, Oxford

(1) An operative procedure is described for exteriorizing the carotid artery of cats.

(2) The normal carotid pressure, measured by a modified Riva-Rocci method, is 140-170 mm. Hg.

(3) On a diet of raw meat 200 g. a day, the blood-pressure is lower (130-140) and the weight increases by about 20 per cent.

(4) On a milk diet (300 c.c. a day), the blood-pressure is higher (150-170) and the weight decreases to its former value.

(5) The addition of 0·8 g. histidine to the milk has no marked effect on blood-pressure.

(6) Emotional changes are accompanied by a rise in blood-pressure, e.g. on seeing a mouse, to 220 mm. Hg or on hearing a blue-bottle to 190 mm. Hg.

We are indebted to Mr. A. S. Chapman for his care of the animals and to Mr. C. Carr for assistance with blood-pressure readings.

Submitted on July 24, 1936






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Copyright © 1936 by the The Physiological Society.