Unformatted text preview: bolus that is easily swallowed. * Chemical breakdown of starches begins in the mouth with the secretion of amylase from the parotid gland. The salivary amylase breaks the bonds between the polysaccharides, converting them to monosaccharides, that can then be absorbed through the walls of the GI tract. Pharynx * The tube that extends from the internal nares to the esophagus in back and the larynx in front. * It has both digestive and respiratory function. * It connects the nasal and oral cavities with the esophagus. * Has a deep layer of longitudinal oriented skeletal muscles * stylopharyngus m .- elevates the larynx & pulls it forward during swallowing * salpingopharyngus m .-raises nasopharynx * External circular layer that is divided into three layers called the superior , middle, and inferior pharyngeal constrictors * Forces food downward during swallowing...
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- Fall '10
- Anatomy, Digestive System, salivary glands, Parotid gland