Oropharynx (Jaw) Flashcards
What are the 2 elevators of the mandible?
Masseter and temporalis
What are the gliders of the mandible?
Medial and lateral pterygoid
Action of the lateral pterygoid?
protrude
Action of medial pterygoid with bilateral contraction?
Elevate, protrude.
Action of pterygoid with unilateral contraction?
gliding side to side
What are the 3 laryngeal elevators/mandible depressors?
digastric (ant & post belly)
mylohyoid
geniohyoid
What is the function of the pharynx?
-resonating chamber for speech
-critical for swallowing and pushing food down into stomach
What are the 3 pharyngeal constrictors?
- Superior constrictor
- Middle Constrictor
- Inferior Constrictor (2 parts)
Action of the constrictors (superior, middle, thyropharyngeus)?
Constricts the pharynx during swallowing and velopharyngeal closure
Innervation of superior, middle, and thyropharyngeus?
CN 11 (XI)
What is the weakest constrictor?
Superior
What are the 2 inferior constrictors?
Thyropharyngeus and cricopharyngeus
What is the thickest + strongest constrictor?
Thyryopharyngeus
-Function of cricopharyngeus?
-Innervation?
Keeps esophagus closed at Upper Esophageal Sphincter, at rest
-pharyngeal branch, eSuperior Laryngeal Nerve and Recurrent Laryngeal Nerve of X
Describe salpingopharyngeus
From eustachian tube down to the pharynx
-elevate pharynx when contracted to help push food
Stylopharyngeus
Styloid process of temporal bone down to pharynx
-elevate pharynx when contracted to help push food
Palatopharyngeus
From soft palate to pharynx
-elevates pharynx when contracted to help push food
-1 of the faucial pillars
Ways to measure pharyngeal-oral function?
x-ray, cinemafluorography, ultrasound
What is the role of the jaw in speech?
-Providing support for the tongue, may help compensate for tongue movements
-Issues with the jaw may effect tongue movements
What are the 3 ways the jaw moves?
-Up and down
-Side to side
-Front to back
