Questions and Answers
What is the nerve supply of the Laryngeal Pharynx?
Which muscle is an afferent limb of the pharynx?
How many cavities does the pharynx communicate with?
What is the shape of the pharynx?
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What is the blood supply of the pharynx?
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What is the name of the incomplete ring of lymphoid tissue that surrounds the opening into the respiratory and digestive systems?
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What is the purpose of the pharyngeal constrictor muscles?
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What triggers the pharyngeal/gag reflex?
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Which nerve may be injured during a palatine tonsillectomy?
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What is the location of the lymphoid tissue that is inflamed in the given PE?
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What is the extent of the pharynx?
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What is a possible complication of a palatine tonsillectomy?
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Which tonsil is located in the upper part of the Waldeyer's ring of lymphoid tissue?
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What is the surgical removal of the palatine tonsil called?
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What is the function of the Superior constrictor muscle?
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Which nerve is responsible for the innervation of the Stylopharyngeus muscle?
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What is the name of the tonsil located in the nasopharynx?
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Which part of the pharynx opens into the larynx and esophagus?
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What is the function of the Palatopharyngeus muscle?
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Which nerve is responsible for the innervation of the Salpingopharyngeus muscle?
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What is the name of the reflex that helps to prevent foreign objects from entering the trachea?
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Which part of the pharynx contains the opening of the auditory tube?
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What is the function of the Inferior constrictor muscle?
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Which nerve is responsible for the innervation of the pharyngeal mucosa in the lower pharynx?
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Study Notes
Pharynx
- The pharynx is a common passageway for the respiratory and digestive systems.
- It is divisible into three portions: nasopharynx, oropharynx, and laryngopharynx.
- The nasopharynx contains the opening of the auditory tube and pharyngeal tonsils.
- The oropharynx contains the palatine and lingual tonsils.
- The laryngopharynx opens into the larynx and esophagus.
- The pharynx is situated behind the nasal cavities, mouth, and larynx.
- It has a funnel-shaped musculomembranous wall that is deficient anteriorly.
Muscles of the Pharynx
- Elevation of the pharynx is done by stylopharyngeus, salpingopharyngeus, palatopharyngeus, and superior constrictor muscles.
- Closure of the oropharyngeal isthmus is done by palatopharyngeus and salpingopharyngeus muscles.
- Constriction of the pharynx is done by superior, middle, and inferior constrictor muscles.
- All muscles are innervated by the Vagus nerve except for stylopharyngeus, which is innervated by the Glossopharyngeal nerve.
Nerve Supply
- Nasopharynx is supplied by the Maxillary nerve (V2).
- Oropharynx is supplied by the Glossopharyngeal nerve.
- Laryngeal Pharynx is supplied by the Internal Laryngeal nerve of the Vagus nerve.
Blood Supply
- The pharynx is supplied by the ascending pharyngeal, tonsillar branches of the facial, maxillary, and lingual arteries.
Gag Reflex
- A pharyngeal gag reflex is the contraction of the pharyngeal constrictor muscles elicited by touching the back of a patient's pharynx.
- Afferent fibers that innervate the pharyngeal mucosa are branches of the Glossopharyngeal nerve.
Waldeyer Ring of Lymphoid Tissue
- It is an incomplete ring of lymphoid tissue that surrounds the opening into the respiratory and digestive systems.
- It consists of palatine, tubal, pharyngeal, and lingual tonsils.
Palatine Tonsillectomy
- It is the surgical removal of the palatine tonsil.
- The Glossopharyngeal nerve may be injured, causing loss of general and taste sensations on the posterior 1/3 of the tongue.
- It may cause severe hemorrhage.
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Description
This quiz covers the afferent and efferent limbs, and various muscles of the pharynx, including stylopharyngeus, salphingopharyngeus, and constrictors. It is part of a medical board prep handout by Topnotch Anatomy Team.