pharynx and esophagus

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Questions and Answers

Which part of the pharynx is situated behind the oral cavity and extends from the lower border of the soft palate to the upper border of the epiglottis?

  • Laryngopharynx
  • Nasopharynx
  • Pharyngeal recess
  • Oropharynx (correct)

What is the function of the salpingopharyngeal fold?

  • Contains the salpingopharyngeus muscle (correct)
  • Divides the nasopharynx and oropharynx
  • Elevates the soft palate during swallowing
  • Formed by the cartilage of the auditory tube

Which structure is located between the palatoglossal and palatopharyngeal arches?

  • Lingual tonsil
  • Tubal tonsil
  • Pharyngeal tonsil
  • Palatine tonsil (correct)

What is the boundary formed by the thyrohyoid membrane and the lamina of the thyroid cartilage in the piriform fossa?

<p>Lateral boundary (B)</p> Signup and view all the answers

Which nerve supplies the oropharynx?

<p>Glossopharyngeal nerve (D)</p> Signup and view all the answers

What is the potential complication of ingested food particles in the piriform fossa?

<p>Impaction (A)</p> Signup and view all the answers

What is the primary source of blood supply to the cervical part of the esophagus?

<p>Inferior thyroid artery (D)</p> Signup and view all the answers

Which nerve is responsible for the parasympathetic nerve supply to the esophagus?

<p>Vagus nerve (B)</p> Signup and view all the answers

What is the term for the inability to swallow?

<p>Dysphagia (C)</p> Signup and view all the answers

Where does the esophagus compress as it expands during filling?

<p>Its walls (B)</p> Signup and view all the answers

What is the result of cricopharyngeus failing to relax following the contraction of the thyropharyngeus part?

<p>Increased pressure forces the mucosa and submucosa posteriorly through the Killian's dehiscence (D)</p> Signup and view all the answers

What is the primary lymphatic drainage of the thoracic part of the esophagus?

<p>Mediastinal lymph nodes (C)</p> Signup and view all the answers

What is the condition characterized by the spasm of the sphincter or inability of the lower esophageal sphincter to relax?

<p>Achalasia cardia (B)</p> Signup and view all the answers

What is the nerve supply of the pharynx?

<p>Pharyngeal plexus of nerves formed by the pharyngeal branches of glossopharyngeal, vagus, and superior cervical sympathetic ganglion (C)</p> Signup and view all the answers

What is the location of the pharyngeal plexuses?

<p>On the middle constrictor (A)</p> Signup and view all the answers

What is the origin of the esophagus?

<p>Continuation of the pharynx at the level of C6 vertebra (D)</p> Signup and view all the answers

What is the termination of the esophagus?

<p>Joins the cardiac end of the stomach (D)</p> Signup and view all the answers

What is the course of the cervical part of the esophagus?

<p>Runs down in the lower part of the neck (B)</p> Signup and view all the answers

What is the anterior relation of the thoracic part of the esophagus?

<p>Trachea and left principal bronchus (A)</p> Signup and view all the answers

What is the total number of constrictions of the esophagus?

<p>4 (B)</p> Signup and view all the answers

What is the cause of the first constriction of the esophagus?

<p>Cricopharyngeus muscle (B)</p> Signup and view all the answers

What is the distance from the incisor teeth to the fourth constriction of the esophagus?

<p>40 cm (A)</p> Signup and view all the answers

What is the primary function of the pharyngeal lymphatic ring?

<p>To act as a first line of defense against microbes (B)</p> Signup and view all the answers

What is the layer of the pharyngeal wall that forms the pharyngeal raphe on the posterior aspect?

<p>Pharyngobasilar fascia (C)</p> Signup and view all the answers

Which muscle is responsible for elevating the larynx and shortening the pharynx during swallowing and speaking?

<p>Palatopharyngeus muscle (C)</p> Signup and view all the answers

What is the nerve supply to the stylopharyngeus muscle?

<p>Glossopharyngeal nerve (C)</p> Signup and view all the answers

What is the primary cause of esophageal varices?

<p>Portal hypertension (A)</p> Signup and view all the answers

What is the gap between the middle and inferior constrictors that allows for the passage of the internal laryngeal nerve and superior laryngeal artery and vein?

<p>Gap between the middle and inferior constrictors (A)</p> Signup and view all the answers

What is the structure that can develop through the weak area in the inferior constrictor muscle due to neuromuscular incoordination?

<p>Pharyngeal diverticulum (B)</p> Signup and view all the answers

What is the result of regurgitation of small amounts of food or gastric fluid into the lower esophagus?

<p>Pyrosis (D)</p> Signup and view all the answers

What is the name of the venous system that drains the submucosal veins of the lower esophagus?

<p>Portosystemic anastomosis (A)</p> Signup and view all the answers

Which muscle is responsible for propelling food into the esophagus during swallowing?

<p>Superior constrictor muscle (D)</p> Signup and view all the answers

What is the term for the involuntary contraction of the constrictor muscles that takes place sequentially from the superior to the inferior end of the pharynx?

<p>Peristalsis (C)</p> Signup and view all the answers

What is the potential consequence of esophageal varices?

<p>Life-threatening hemorrhage (C)</p> Signup and view all the answers

What is the location of the submucosal veins that form esophageal varices?

<p>Lower esophagus (D)</p> Signup and view all the answers

What is the structure that forms the inlet of the larynx?

<p>Aryepiglottic fold (B)</p> Signup and view all the answers

What is the consequence of injuring the internal laryngeal nerve during foreign particle removal?

<p>Loss of protective cough reflex (B)</p> Signup and view all the answers

Flashcards

Oropharynx

The part of the pharynx behind the oral cavity, extending from the soft palate to the epiglottis.

Salpingopharyngeal fold function

Contains the salpingopharyngeus muscle.

Palatine tonsil location

The structure located between the palatoglossal and palatopharyngeal arches.

Piriform fossa lateral boundary

Formed by the thyrohyoid membrane and the lamina of the thyroid cartilage.

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Oropharynx nerve supply

Supplies sensory innervation to the oropharynx.

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Piriform fossa food impaction

Can lead to choking or infection if lodged.

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Esophagus blood supply (cervical)

Supplies blood to the cervical part of the esophagus.

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Esophagus parasympathetic nerve supply

Provides parasympathetic innervation to the esophagus.

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Dysphagia

Inability to swallow.

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Esophagus compression during filling

The esophagus compresses upon itself during filling.

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Cricopharyngeus dysfunction

Increased pressure forces the mucosa and submucosa posteriorly through Killian's dehiscence.

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Esophagus lymphatic drainage (thoracic)

Mediastinal lymph nodes.

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Achalasia cardia

Spasm of the sphincter or failure of the lower esophageal sphincter to relax.

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Pharynx nerve supply

Pharyngeal plexus formed by glossopharyngeal, vagus, and superior cervical sympathetic ganglion.

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Pharyngeal plexuses location

Located on the middle constrictor muscle.

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Esophagus origin

Continuation of the pharynx at the level of the C6 vertebra.

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Esophagus termination

Joins the cardiac end of the stomach.

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Esophagus course (cervical)

Runs down in the lower part of the neck.

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Esophagus anterior relation (thoracic)

Trachea and left principal bronchus.

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Esophagus constrictions

4

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Esophagus first constriction cause

Cricopharyngeus muscle.

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Esophagus fourth constriction distance

40 cm

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Pharyngeal lymphatic ring function

To act as a first line of defense against microbes.

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Pharyngeal wall layer

Pharyngobasilar fascia.

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Muscle elevating larynx

Palatopharyngeus muscle.

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Stylopharyngeus nerve supply

Glossopharyngeal nerve.

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Esophageal varices cause

Portal hypertension.

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Gap between constrictors

Between the middle and inferior constrictors.

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Structure in weak area

Pharyngeal diverticulum.

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Regurgitation of gastric fluid

Pyrosis.

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