Kinesiology 2222A/B Lecture Notes - Lecture 14: Nasal Cavity, Epiglottis, Digestion
11 Apr 2019
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Nasal cavity and oral cavity connected to beginning of respiratory systems (larynx, trache digestive systems. Digestion: we force food down our esophagus when we swallow - lifting of the larynx cov epiglottis and a series of contractions that occur that force food down. We start from up top and contract muscles to force food down while respiratory passage blocked. Squeezing the food down the throat - superior through inferior contractions. Longitudinal muscles: inside the pharyngeal constrictors: also participate in swallowing pr achea) or covered by age way is g process. Longitudinal muscles: inside the pharyngeal constrictors: also participate in swallowing pr. One of the additional events that occur while we swallow is that we close the nasal phary the nasal cavity. Eustachian tube is closed we open the ear to nasal cavity to equilibrate the ear to the outs environment. Eustachian tube is connected to your middle ear. Vagus nerve innervates all throat muscles but the stylopharyngeus.
