. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE MOUTH. 40S They may be studied in the following order : 1. Fibrous membrane. 2. Muscles. 3. Mucous membranes. 4. Vessels and nerves. 1. Fibrous membrane (Fig. 215, 5).—This membrane, remarkable for its power of resistance, forms a real framework for the soft palate, of which it only occupies the anterior moiety. It is attached in front of the palatine arch, and is prolonged posteriorly by a particular muscle, the palato-pharyngeus. 2. Muscles.—Of these muscles, which are all pairs, there are those which constitute a
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE MOUTH. 40S They may be studied in the following order : 1. Fibrous membrane. 2. Muscles. 3. Mucous membranes. 4. Vessels and nerves. 1. Fibrous membrane (Fig. 215, 5).—This membrane, remarkable for its power of resistance, forms a real framework for the soft palate, of which it only occupies the anterior moiety. It is attached in front of the palatine arch, and is prolonged posteriorly by a particular muscle, the palato-pharyngeus. 2. Muscles.—Of these muscles, which are all pairs, there are those which constitute a layer situated in the middle of the soft palate itself, and represent the intrinsic muscles; these are the pharyngo-staphylinus {palato-pharyngeus) and the palato-staphylinus {circumflexus palati). The others, the peristaphylinus —external and internal {tensors palati external and internal), are only inserted Fig. MEDIAN LONGITUDINAL SECTION OF THE HEAD AND UPPER PART OF NECK. 1, Upper lip; 2, premaxilla; 3, hard palate; 4, tongue; 5, septum nasi; 6, nasal bone; 7, palatine arch; 9, pterygoid bone; 10, epiglottis; 11, entrance to the Eustachian tube; 12, arytenoid cartilage; 13, cricoid cartilage; 14, oesophagus; 15, frontal bone and sinus; 16, cerebrum; 17, corpus callosum ; 18, cerebellum; 19, sphenoid bone; 20, medulla oblongata; 21, cervical ligament, 22, spinal cord ; 23, occipital bone; 24, 24, atlas; 25, 25, dentata; 26, trachea. into the organ by their terminal extremities, and therefore act as extrinsic muscles. Pharjmgo-staphylinus (Palato-pharyngeus) (Fig. 215, 6) In removing the mucous and glandular layers which cover the anterior face of the soft palate, there is exposed a wide and thin muscular fasciculus succeed- ing the fibrous layer behind, and occupying the posterior half of the entire organ. The fibres of which this muscle is composed, mixed in the median line with those of the muscle of the opposite side, are directed backwards and outwards, the
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