Licence: Public Domain Mark
Credit: The anatomy of the thymus gland / by Sir Astley Cooper. Source: Wellcome Collection.
Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.
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![3G But I have not been able to discover any ]3rancli from the Phrenic going to the Gland, although some pass through the cellular membrane which envelopes it, and to the pericardium. From the superior thoracic ganglion of the Grand Sym- ]3athetic, a nerve proceeds and forms a plexus around the internal mammary artery, and on the superior cava, with which some filaments of the phrenic nerve comnuuiicate. At the origin of the arteria tliymica, from the internal mammary artery, a plexus of nerves passes upon the coats of the former artery, and upon it the nerves appear to ])roceed to the Thymus Gland, but the branches are so minute, that their entrance into the Gland, I speak of with less con- fidence, than of any other part of the anatomy of this organ. I may add that I have seen a filament from the junction of the Par Vagum and Grand Sympathetic pass on the side of the Thyroid Gland to the Thymus. Physiology of the Thymus Gland. That an important function must be performed by an organ so uniformly found, of a size so large, of a highly vas- cidar structure and secreting abundantly, no one who duly considers the subject can for a moment hesitate to acknow-](https://iiif.wellcomecollection.org/image/b21300367_0048.jp2/full/800%2C/0/default.jpg)
