On the inervation of the heart, with especial reference to the heart of the tortoise.

  • Gaskell, Walter Holbrook, 1847-1914.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: On the inervation of the heart, with especial reference to the heart of the tortoise. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    / , # [From the journal of Physiology. I Vol. IV. No. 2.] ft ON THE INNERVATION OF THE HEART, WITH ESPECIAL REFERENCE TO THE HEART OF THE TORTOISE. By W. H. GASKELL, M.D., F.R.S. [Plates II—V.] [From the Physiological Laboratory, Cambridge.] The views held by physiologists upon many points connected with the innervation of the heart have been too exclusively based upon observations upon a single type of heart, viz. that of the frog. It is therefore very advisable wherever possible to control these experiments by a corresponding elaborate series of observations upon the hearts of a large number of other animal types, and in this way to trace the evolution of function in the same way as the morphologist tracks that of structure. With this object in view I propose in this paper to discuss as fully as I can the series of experiments which I have made during this last year upon the innervation of the tortoise heart, comparing them at the same time with corresponding observations upon the hearts of other animals. I shall therefore embody in this paper the substance of three separate preliminary papers which I have already published, viz.: 1. Preliminary observations on the innervation of the heart of the tor- toise1. 2. On the sequence of the contractions of the separate parts of the heart2. 3. On certain points in the function of the cardiac muscle3. I propose to divide the paper into four parts, viz.: 1. On the spontaneous rhythm of the different parts of the heart and of the heart as a whole; 2. On the sequence of the contractions of the different heart cavities; 3. On the action of the cardiac nerves; 4. On the action of atropin and muscarin; and in each part to strictly confine myself to the subject matter of that part. In a concluding section a general discussion on the four previous sections will be given. I Journ. of Physiology, Vol. m. Nos. 5 and 6. II Brit. Med. Journ. 1882, p. 572. 3 Proc. Camb. Phil. Soc., Vol. iv., Pfc. v. PH. IV. , - 'ft c !&_ * /_ ^(4 : H i*