BIOL110 Lecture Notes - Thyroglossal Duct, Synovial Joint, Ethmoid Sinus
30 Jan 2013
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Carries parasymp and taste fibers of vii. Picks up sympathetics on way to pteropalatine ganglia: foramen spinosum, carotid canal. 5 layers (from inside out: mucosa lines everything on inside, submucosa, fibrous fascia (pharyngeal basilar fascia, muscles, buccopharyngeal fascia, nasopharynx pharynx regions. From pterygomandibular raphe and pterygoid hamulus to median raphe and pharyngeal tubercle: pterygomandibular raphe: boundary b/w buccinator and superior constrictor. From hyoid bone and inferior end of stylohyoid ligament to. From thyroid and cricoid cartilages to median raphe. Lateral gaps of pharynx: middle constrictor median raphe, inferior constrictor, internal muscles: longitudinal, elevate pharynx, stylopharyngeus, palatopharyngeus, salphingopharyngeus, innervation. From palate to thyroid cartilage, side of pharynx and esophagus. Cn x carries motor fibers to plexus, but derived from cranial part stylopharyngeus. Innervated by only motor branch of cn ix: also receives innervation from external and recurrent laryngeal branches of vagus. Nasal cavities and paranasal sinuses: fxns of nose. Alter sinus alter voice; affect tone and pitch.
