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"Fun Facts" F&S Mid.

QuestionAnswer
Vagus nerve branches Pharyngeal, Superior laryngeal nerve, recurrent laryngeal nerve
Pharyngeal along with CNIX supplies pharyngeal muscles and palate
Superior laryngeal nerve (external) supplies motor innervation to cricothyroid muscle (stretch/pitch)
Superior laryngeal nerve (Internal branch) supplies sensory innervation to most of the mucosa above glottis.
Recurrent Laryngeal Nerve (aka inferior laryngeal nerve) innervates all muscles of larynx except cricothyroid muscle. Responsible for glottic (vocal fold) closure during swallowing.
Importance of saliva (five) -Major salivary glands: Parotid (CN IX), Submandibular & Sublingual (CNVII) -Saliva protects the teeth, reduces oral bacteria, initiates digestion, enhances taste, and aides in bolus formation/passage through the oral cavity to the esophagus.
Importance of saliva (cont.) -Saliva is alkaline and helps neutralize stomach acid Xerostomia: Dry mouth -Dehydration, medications, radiation, surgery, drug abuse
Explain the importance of the pharyngeal recesses in swallow (valleculae, pyriform sinuses) The Valleculae & Pyriform Sinuses are called the pharyngeal recesses or pharyngeal ports. - Valleculae: The wedge-shaped space formed between the base of the tongue and the epiglottis.
importance of the pharyngeal recesses in swallow (Cont.) - Pyriform Sinuses: The pyriform sinuses are the narrow depressions situation on each side of the opening to the larynx.
Created by: user-1977124
 

 



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