An Atlas of Human Anatomy. Explanatory Text [And] Atlas (Paperback)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: PLATE IV. Fig. 1. This dissection is carried more deeply than the last, and is especially intended to show the mutual relations of the great vessels. It also shows the next stage in the dissection of the submaxillary region. In order to obtain it from the last the sternal heads of both sterno-mastoids were cut away, and the omo-hyoids and the sterno-hyoids, and the left sterno- thyroid, were removed completely, the right sterno-thyroid only in part. In the submaxillary region the right digastric, both mylo- hyoids, and the left hyo-glossus muscle, and hypoglossal and gustatory nerves, were taken away. Lastly, the first piece of the sternum was cut out and taken away, with the muscles attached to it. Lymphatic Glands.?One of the mediastinal glands, +, is shown. A number of lymphatic glands, not shown in the drawing, pass across the submaxillary region, uniting the deep series of the two sides (p. 8). They are important, because they are affected secondarily to inflammatory or malignant disease of the tongue and mouth. Myxomatous tumours, in connexion with the salivary glands and cysts (serous mucous or sebaceous) of the sublingual region, may occur in this part, rendering the diagnosis of tumours in this part sometimes difficult. In the removal of any of these it is easy to displace or remove the submaxillary gland. The submaxillary gland is principally shown on Plate 3, Fig. 2, If. The deep part of it is here drawn, x . It is shown in side view in Plates 1 and 2. It is disc-shaped, and consists of large flattened lobules. It is contained in a sheath ofdeep cervical fascia, the upper and outer part of which, strong and attached above to the styloid process, is called the stylo- maxillary ligament, and separates this gland from the parotid. Lying below and beneath...