This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1876. Excerpt: ... THE DIGESTIVE APPARATUS. THE MOUTH. This cavity
is bounded superiorly by the bard and soft palate, inferiorly by
the tongue and the reflections of mucous membrane from it to the
gums, and laterally by the cheeks. Its anterior opening, which
forms the commencement of the digestive canal, corresponds to the
lips; and posteriorly it communicates with the pharynx through the
opening called isthmus faucium, the boundaries of which are the
soft palate and uvula superiorly, the tongue inferiorly, and the
pillars of the palate and tonsils laterally. Within the mouth we
observe the opening of the three salivary glands and follicles, and
the teeth of each side. The parotid gland opens by a single orifice
opposite the second superior molar tooth; the submaxillary gland of
each side, by a single orifice at the floor of the mouth, by the
side of the reflection of mucous membrane called fraenum linguae,
and the third salivary gland or sublingual by several small
orifices (eight or ten) on each side of the fraenum linguae. Is
lined with squamous epithelium. THE TEETH. The number of teeth in
the adult is thirty-two, sixteen in each jaw; and to distinguish
them from 'teeth of the child they are called permanent. They are
divided into eight incisors, four canine; eight bicuspids, and
twelve molars. The two last molars do not appear until late in
life, and hence have been called the wisdom teeth. They are,
however, sometimes wanting. In the child the number of teeth is
only twenty, and are called milk, deciduous, or temporary teeth.
They are divided into eight incisors, four canine, and eight
molars. THE TONGUE Is a solid muscular organ, occupying the floor
of the mouth, and is covered with mucous membrane. "Posteriorly it
is thick, and attached to the hyoid hone, anteriorl...
General Books LLC
|Country of origin:
||246 x 189 x 2mm (L x W x T)
||Paperback - Trade
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