Pharynx Anatomy and Function Quiz

The pharynx is approximately 12 cm long and extends from the base of the skull to the oesophagus at the level of the C6 vertebra.

The layers are mucosa, submucosa, pharyngobasilar fascia, muscular coat, and buccopharyngeal fascia.

The stylopharyngeus muscle is supplied by the glossopharyngeal nerve.

<p>The constrictor muscles function in involuntary contraction to facilitate swallowing by constricting the pharynx from superior to inferior.</p> Signup and view all the answers

<p>Waldeyer's ring consists of the palatine, tubal, lingual, and pharyngeal tonsils.</p> Signup and view all the answers

<p>The nasopharynx is lined with ciliated columnar epithelium, which serves a respiratory function by helping to keep the airways clear.</p> Signup and view all the answers

<p>These muscles elevate the larynx and shorten the pharynx during swallowing and speaking.</p> Signup and view all the answers

<p>The nasopharynx is primarily supplied by branches of the maxillary nerve, while the rest of the pharynx is supplied by the glossopharyngeal and vagus nerves.</p> Signup and view all the answers

<p>The pharyngobasilar fascia contributes to the formation of the pharyngeal raphe on the posterior aspect of the pharynx.</p> Signup and view all the answers

<p>The nasopharynx connects to the oropharynx through the pharyngeal isthmus.</p> Signup and view all the answers

<p>The tonsillar fossa is bounded anteriorly by the palatoglossal fold and posteriorly by the palatopharyngeal fold.</p> Signup and view all the answers

<p>The piriform fossa is important as it is formed by the thyrohyoid membrane and the thyroid cartilage, and can be a site for food particle impaction.</p> Signup and view all the answers

<p>The pharynx is supplied by the pharyngeal plexus formed by branches of the glossopharyngeal nerve, vagus nerve, and superior cervical sympathetic ganglion.</p> Signup and view all the answers

<p>The base of the tonsillar fossa is formed by the dorsal surface of the posterior one third of the tongue.</p> Signup and view all the answers

<p>The laryngopharynx extends from the upper border of the epiglottis to the lower border of the cricoid cartilage at C6.</p> Signup and view all the answers

<p>Veins from the pharynx drain into the internal jugular vein and the facial vein.</p> Signup and view all the answers

<p>The pharynx receives blood supply mainly from the ascending pharyngeal artery, ascending palatine, tonsillar arteries, and branches from the maxillary artery.</p> Signup and view all the answers

<p>Improper removal of food particles may cause injury to the internal laryngeal nerve, leading to loss of sensation in the supraglottic larynx.</p> Signup and view all the answers

<p>The pharyngeal wall is formed by the overlapping of three constrictor muscles which assist in the swallowing process.</p> Signup and view all the answers

<p>The laryngopharynx is located behind the larynx, in front of the lower part of C3, and the 4th and 5th cervical vertebrae.</p> Signup and view all the answers

<p>The roof of the nasopharynx is formed by the posterior part of the body of the sphenoid bone and the basilar part of the occipital bone.</p> Signup and view all the answers

<p>Pathologically enlarged pharyngeal tonsil, known as adenoids, may obstruct nasal breathing.</p> Signup and view all the answers

<p>The floor of the nasopharynx communicates with the oropharynx through the pharyngeal isthmus.</p> Signup and view all the answers

<p>The pharyngeal recess, also known as the fossa of Rosenmuller, lies behind the tubal elevation.</p> Signup and view all the answers

<p>The salpingopharyngeal muscle contributes to the salpingopharyngeal fold.</p> Signup and view all the answers

<p>The pharyngeal isthmus separates the oropharynx from the nasopharynx.</p> Signup and view all the answers

<p>The oropharynx is primarily supplied by the glossopharyngeal nerve.</p> Signup and view all the answers

<p>The palatoglossal and palatopharyngeal folds are produced by the palatoglossus and palatopharyngeus muscles respectively.</p> Signup and view all the answers

<p>The palatine tonsil is located between the palatoglossal and palatopharyngeal arches.</p> Signup and view all the answers

<p>The oropharynx is supported by the axis (C2) and C3 vertebrae behind it.</p> Signup and view all the answers