Applied Oral Physiology by Christopher L. B. Lavelle

By Christopher L. B. Lavelle

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6) Prevention of gastric reflux during oesophageal emptying. (7) Clearing of residual material pharyngo-oesophageal tract. 5 Suprahyoid muscles Muscle Origin Insertion Nerve Action Mylohyoid Inner surface of mandible Upper border of hyoid bone Trigeminal Digastric (anterior belly) Intermediate tendon by loop of fascia to hyoid bone Mental spine of mandible Lower border of mandible Trigeminal Hyoid bone Styloid process of temporal bone Greater cornu of hyoid Upper genial tubercle of mandible Anterior border of styloid process Anterior surface of soft palate Body of hyoid at greater cornu Into tongue sides Cervical (Cl and C2) through hypoglossal Facial Elevates tongue and floor of mouth, depresses jaw when hyoid bone is in fixed position Raises hyoid bone if jaw is in fixed position, depresses jaw if hyoid bone is in fixed position Draws hyoid bone forward, depresses mandible when hyoid bone is in fixed position Geniohyoid Stylohyoid Hyoglossus Genioglossus Styloglossus Palatoglossus (2) (3) (4) (5) Hyoid, inferior tongue, tip Into side of tongue Dorsum and side of tongue mylohyoid, geniohyoid and digastric muscles in the floor of the mouth.

1972) Abnormalities of taste and smell in Sjögren's syndrome. Ann. Int. , 76, 375-383 8. I. (1967) Symposium on Oral Sensation and Perception. C. Thomas 9. R. A. (1961) Number and distribution of taste buds on the epiglottis, pharynx, larynx, soft palate and uvula in a human newborn. Anat. Rec, 140, 91-95 10. BURKL, W. (1954) Über das Vorkommen von Geschmacksknopsen im mittleren Drittle des Osophagus. Anat. , 100, 320-321 11. , DANIEL, F . T . , WENDELL, A. I. (1970) The ulltrastructure of the human circumvallate papilla.

Conceivably, acetylcholine may play a role in some of the early events of the taste process which occur at or near the pore of the taste bud 1 . The function of the adrenergic fibres of the taste bud remain obscure. Once the generator potential is formed, it is conducted by neural or modified neural elements to the synapse where true depolarization occurs. 16 Review questions Subsequently, these signals are translated along the Vllth, IXth and Xth cranial nerve branches to the ipsilateral nucleus of the tractus solitarius, with second-order neurones subsequently translating the information to the parietal and anterior opercularinsular cortex via the ventral posterior thalamus.

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