PHTY211 Lecture Notes - Lecture 12: Tongue, Pharyngeal Muscles, Cricoid Cartilage
Document Summary
A long hollow muscular and fascial tube that is common to both the respiratory and digestive tract. It begins at the back of the nose and extends to bottom of larynx (voice box). 12. 2 divide the pharynx into its component sections: nasopharynx. From posterior nostril to tip of soft palate: oropharynx. From tip of soft palate to tip of epiglottis. From tip of epiglottis to lowest edge of larynx. Digestive system: it(cid:859)s muscular walls function in the process of swallowing and it serves as a pathway for the movement of food from the mouth to the esophagus. Respiratory system: allows for the movement of air from the nose and mouth to the larynx in the process of breathing. 12. 5 describe the sensory and motor nerve supply of the pharynx. External layer- the constrictors (3 layers-superior, middle and lower constrictors) Nerve supply: vagus nerve (x) and glossopharyngeal (ix) 12. 6 describe the process of swallowing, describing the voluntary and involuntary phases.
