The physiology of the circulation in plants : in the lower animals, and in man : being a course of lectures delivered at surgeons' hall to the president, fellows, etc of the Royal college of surgeons of Edinburgh, in the summer of 1872 . auricles and ventricles. Afew of the branches forming the superficial cardiac plexus passbackwards and appear on the posterior surface of the heart; acertain number of the branches from the deep cardiac plexuspassing forwards to appear on the anterior surface of the is quite correct to say that the surface and substance of theauricles and ventricles a
The physiology of the circulation in plants : in the lower animals, and in man : being a course of lectures delivered at surgeons' hall to the president, fellows, etc of the Royal college of surgeons of Edinburgh, in the summer of 1872 . auricles and ventricles. Afew of the branches forming the superficial cardiac plexus passbackwards and appear on the posterior surface of the heart; acertain number of the branches from the deep cardiac plexuspassing forwards to appear on the anterior surface of the is quite correct to say that the surface and substance of theauricles and ventricles are enveloped in a more or less uniformplexus. The superficial and deep cardiac plexuses and their pro-longations on the surface and in the substance of the heart displaynumerous ganglionic enlargements, to be described presently. The branches supplied by the pneumogastric and sympatheticnerves to the heart on the right side of the human subject arerepresented at Fig. 145. This figure also shows the interlacing ofthe nervous filaments which forms the various plexuses described,as well as the ^anLilionic enlargements, which are a distinguishingfeature of the plexuses. 2 I 24a DR PETTIGREW ON THE PHYSIOLOGY OF CIRCULATION. Fig- Fig. 145 shows the nerve-filaments supplied to the heart hy the pneumogastric andsympathetic nerves on the right side in man (after Hirschfeld and LeveilltS). c, Trunk ofright pneumogastric nerve in neck, ft, Ganglion of trunk of right pneumogastric , Trunk of great sympathetic nerve in neck, h, Ditto at root of neck. /, Ditto in , Superior cervical ganglion of sympathetic nerve. /, Middle cervical ganglion of sympa-thetic, i, Inferior cervical ganglion of sympathetic, e, Superior cardiac nerve, g, Middlecardiac nerve, o, Nerve from middle cervical ganglion of sympathetic proceeding to rightrecurrent laryngeal nerve (p). k, Intercostal nerves. I, Intercostal vein, m, Intercostalartery furnished with nerve from ganglion of sympathetic, n
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