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15 Cards in this Set
- Front
- Back
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superior opening of the pharynx
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nasopharynx - at the base of the skull
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inferior opening of the pharynx
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-level of the cricoid cartilage of larynx and C6 vert.
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three parts of the pharynx
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-nasopharynx (upper part, posterior to the nose)
-oropharynx (middle part, posterior to the mouth) -laryngopharynx (inferior part, posterior to the larynx) |
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5 layers of the pharyngeal wall
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-mucus membrane
-submucosa -pharyngobasilar fascia -skeletal muscle layer -buccopharyngeal fascia |
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retropharyngeal space location
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between buccopharyngeal fascia and prevertebral fascia layer
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layer of the pharyngeal wall that contains the pharyngeal plexus
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buccopharyngeal fascia
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all muscles that insert by blending with their fellow from the other side at the pharyngeal raphae at the posterior midline
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pharyngeal muscles
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pharyngeal constrictor muscles action
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constrict the wall of the pharynx during swallowing
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superior constrictor origin, innervation
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-originates from the pterygoid hamulus, pterygomandibular raphae and mandible
-additional attachment at pharyngeal tubercle of the occipital bone -innervated by the pharyngeal plexus |
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middle constrictor origin, innervation
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-originates from the hyoid bone
-innervated by the pharyngeal plexus |
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inferior constrictor origin, innervation
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-originates from the thyroid cartilage
-blends with the esophagus inferiorly -innervated by the pharyngeal plexus |
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stylopharyngeus origin, insertion, innervation
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-originates from the styloid process
-passes between the superior and middle constrictors to insert on the thyroid cartilage -innervated by CN IX |
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location of pharyngeal tonsils
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-located in the nasopharynx
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pharyngeal plexus recieves nerve fibers from
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CN IX, X, XI and sympathetic nerves
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sensory innervation to the pharynx
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CN IX
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