Practical anatomy : anew arrangement of the London dissector : with numerous modification and additions, containing a concise description of the muscles, bloodvessels, nerves, viscera, and ligaments of the human body as they appear on dissection : with illustrations / by D. Hayes Agnew.

  • David Hayes Agnew
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Practical anatomy : anew arrangement of the London dissector : with numerous modification and additions, containing a concise description of the muscles, bloodvessels, nerves, viscera, and ligaments of the human body as they appear on dissection : with illustrations / by D. Hayes Agnew. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    pair; on the side, branches of the Portio Dura and Inferior Maxillary Nerves ; and behind, the Occi- pitalis Minor and Major—the former from the super- ficial plexus of the neck, and the latter the main stalk of the second cervical spinal nerve. The muscles of the ear are of three classes. 1. The common muscles move the external ear; they are not always so distinct as to admit of a clear demon- stration. (1) Attollens Aurem—Arises from the tendon of the occipito-frontalis, and from the aponeurosis of the temporal muscle. Inserted into the upper part of the root of the car- tilage of the ear, opposite to the antihelix. Use. To draw the ear upward. (2) Anterior Auris—Arises, thin and membranous, from the posterior part of the zygomatic process of the temporal bone. Inserted into a small eminence on the back of the helix, opposite to the concha. Use. To draw the eminence a little forward and up- ward. (3) The Retrahentes Auris—Arise, by two or three distinct slips, from the external and posterior part of the mastoid process, immediately above the insertion of the sterno-cleido mastoideus. Inserted into that back part of the ear which is op- posite to the septum, dividing the scapha and concha. Use. To draw the ear back and stretch the concha. Before describing the proper muscles of the ear, no- tice the following. The part usually called ear is for the most part cartilaginous; appended to it below is a pendulous portion, the LoBUS, composed of granulated fat and dense cellular membrane; with the exception of this, all above is the Pinna. The deep cavity in the middle is the Concha. Dividing the upper part of the concha into two unequal fossae is a ridge which runs along the circumference of the pinna and ends in the lobus; this is the Helix—within it another, the Anti- helix. On the anterior part of the concha is a projec-
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