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Pharynx Anatomy and Physiology

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Questions and Answers

What is the primary function of the cricopharyngeus muscle during swallowing?

To initiate the swallowing reflex

To prevent air from entering the esophagus (correct)

To contract the pharynx for better food propulsion

To facilitate the passage of food into the larynx

Which of the following arteries is NOT involved in supplying blood to the pharynx?

Ascending pharyngeal artery

Descending thoracic artery (correct)

Tonsillar artery

Pharyngeal branch of the maxillary artery

Which part of the pharynx is connected to the larynx?

Pharyngeal inlet (correct)

Oropharynx

Nasopharynx

Laryngopharynx

From which artery does the ascending palatine artery branch off?

<p>External carotid artery</p> Signup and view all the answers

Which vein is primarily responsible for draining venous blood from the pharynx?

<p>Pharyngeal plexus of veins</p> Signup and view all the answers

Study Notes

Pharynx Anatomy

Part of the pharynx located behind the larynx
Connected to the larynx through the laryngeal inlet
Inferior constrictor muscle has a superior portion (thyropharyngeus) located opposite the thyroid cartilage
Inferior constrictor muscle has an inferior portion (cricopharyngeus) located opposite the cricoid cartilage; this section prevents air from entering the esophagus during swallowing

Pharynx Blood Supply

Supplied by the ascending pharyngeal artery (branch of external carotid artery)
Supplied by ascending palatine artery (branch of facial artery)
Supplied by tonsillar artery (branch of facial artery)
Supplied by a pharyngeal branch of the maxillary artery

Pharynx Venous Drainage

Veins of the pharynx converge to form the pharyngeal plexus of veins
Pharyngeal plexus drains into the internal jugular vein

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Description

This quiz covers the anatomy, blood supply, and venous drainage of the pharynx. Explore the connection of the pharynx to the larynx, the muscles involved, and the relevant arteries and veins. Test your knowledge on the important structures and functions related to the pharynx.