The dissector, or, Practical and surgical anatomy / By Erasmus Wilson ... with one hundred and six illustrations. Modified and re-arranged by Paul B. Goddard.

  • Wilson, Erasmus, Sir, 1809-1884.
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: The dissector, or, Practical and surgical anatomy / By Erasmus Wilson ... with one hundred and six illustrations. Modified and re-arranged by Paul B. Goddard. Source: Wellcome Collection.

Provider: This material has been provided by the University of Massachusetts Medical School, Lamar Soutter Library, through the Medical Heritage Library. The original may be consulted at the Lamar Soutter Library at the University of Massachusetts Medical School.

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    the cervical plexus, viz.—Superficialis colli, Auricularis mag- nus, Occipitalis minor. Sterno-mastoid muscle. The external jugular vein lies upon the deep fascia. The nerves lie partly between the two layers of the deep fascia, and partly superficial to them. The muscle is between the two layers, being the cause of their separation. The External jugular vein (Jig. 31. 8.) is the superficial venous trunk of the neck; it receives the returning blood from the exterior of the side of the head, being formed by the Tem- poral vein, Internal maxillary, Posterior auricular, and near to the clavicle is joined by cutaneous veins from the back of the neck. Immediately beneath the parotid gland it communicates with the internal jugular vein. Course.—Emerging from the parotid gland in which it lies im- bedded, it descends somewhat obliquely along the side of the neck, and behind the clavicle to the subclavian vein. Relations.—It lies upon the sheath of the sterno-mastoid mus- cle for nearly its whole course, being placed for a short space to its anterior border above, and upon its posterior border below. It is accompanied by the auricularis magnus nerve, and is co- vered by the platysma muscle, enclosed between the two layers of superficial fascia. The next step in the dissection is to open the sheath of the sterno-mastoid muscle, and carefully trace the three ascending branches of the cervical plexus to their destination. The Superficialis colli {fig. 31. 11.) pierces the fascia at the anterior border of the muscle, and ascends obliquely towards the lower jaw, beneath which it forms a plexus with the cer- vicofacial branches of the facial nerve. It is distributed to the integument on the front of the neck. The Auricularis magnus {fig. 31. 13.,) the largest of the three, pierces the fascia, and accompanies the external jugular vein. It is distributed to the integument over the parotid gland, and to the external ear, and communicates with the facial nerve. The Occipitalis minor (fig. 31. 14.) ascends along the pos- terior border of the sterno-mastoid muscle, and is distributed to the integument of the occiput. Having learned the jugular vein and ascending nerves of the cervical plexus, attention must now be directed to the sterno- mastoid muscle, from which the fascia should be removed so as to expose its entire length. The fascia should also be dissected from the whole of the rest of the neck, both before and behind