What are the potential dangers of the piriform recess?

The branches of the internal laryngeal and inferior laryngeal nerves (continuation of recurrent laryngeal) lie deep to the mucous membrane of the piriform recess. Fish bones and other foreign bodies may pierce the mucous membrane of the recess and cause injury to the internal laryngeal nerve.

Is the piriform fossa in the pharynx or larynx?

The pyriform sinus is located in a posterolateral position in relation to the larynx. It is part of the pharynx. Anatomically, its borders are the thyroid cartilage and thyrohyoid membrane laterally, and the cricoid cartilage and aryepiglottic fold medially.

What is the pyriform?

Pyriform sinus refers to the pear-shaped fossa (Latin for trench) just lateral to the laryngeal entrance. … The pyriform fossas and post-arytenoid area together constitute the swallowing crescent, which channels swallowed material just before it enters the esophagus, behind the larynx.

Which nerve carries sensation from the vestibule of the larynx and the piriform recess?

Sensory Innervation The internal laryngeal branch of the vagus nerve (X) carries sensation from the piriform recesses of the laryngopharynx.

What is the function of the piriform recess?

A deep depression in the wall of the laryngeal pharynx lying lateral to the orifice of the larynx. It is bounded laterally by the thyroid cartilage and medially by the cricoid and arytenoid cartilages. It is a common site for lodgment of foreign objects.

What is the role of the piriform fossa?

The piriform fossa forms the bottom part of the pharynx and acts as a pair of side branches of the vocal tract.

Where is the piriform recess?

On either side of the laryngeal orifice in humans is a recess, termed the pyriform sinus (also piriform recess, piriform sinus, piriform fossa, or smuggler’s fossa), which is bounded medially by the aryepiglottic fold, laterally by the thyroid cartilage and thyrohyoid membrane.

What structures are found in the piriform recess?

The hypopharynx comprises the piriform sinuses, the lateral and posterior pharyngeal walls, and the posterior surfaces of the larynx. These structures surround the larynx posteriorly and laterally. Tumors in this region can be difficult to detect because of the recesses and spaces surrounding the larynx.

Where is the piriform fossa placed?

femur The piriform fossa is an extracapsular area of the proximal region of the femur. It is a small, shallow depression at the end of the greater trochanter where the piriformis tendon is inserted.

Does the piriform recess lies posterior and lateral to the larynx?

The pyriform sinus (also spelled piriform sinus and also known as the pyriform recess, pyriform fossa, and smuggler’s fossa) is the pear-shaped subsite of the hypopharynx located posterolaterally to either side of the laryngeal opening.

What is the pyriform aperture?

The pyriform aperture is the most anterior and narrow opening of the bony nasal airways. It is limited laterally by the nasal process of the maxilla, inferiorly by the junction of the horizontal process of the maxilla and the anterior nasal spine, and superiorly by the nasal bones [2].

What opens into sinus of larynx?

The anterior part of the ventricle leads up by a narrow opening into a pouch-like diverticulum, a mucous membranous sac of variable size called the appendix of the laryngeal ventricle. The appendix (also called the laryngeal saccule, pouch or Hilton’s pouch) extends vertically from the laryngeal ventricle.

Where is the tracheoesophageal groove?

The TEG, the sulcus formed by the abutment of the trachea anteriorly and esophagus posteriorly, is also useful for identifying the RLN [4]. Anatomical location of the Berry Ligament. The RLN is the structure most at risk for iatrogenic injury during procedures on the anterior neck, particularly thyroidectomy [5].

What happens when the recurrent laryngeal nerve is damaged?

Injury to the recurrent laryngeal nerve has the potential to cause unilateral vocal cord paralysis. Patients with this typically complain of new-onset hoarseness, changes in vocal pitch, or noisy breathing.

What is the piriform sinus?

The pyriform sinus (also spelled piriform sinus and also known as the pyriform recess, pyriform fossa, and smuggler’s fossa) is the pear-shaped subsite of the hypopharynx located posterolaterally to either side of the laryngeal opening.

What muscle elevates the pharynx?

Palatopharyngeus muscle Palatopharyngeus muscle It elevates the pharynx in order to close off the nasopharynx during swallowing.

What is superior to the larynx?

The larynx is located within the anterior aspect of the neck, anterior to the inferior portion of the pharynx and superior to the trachea.

What is superior laryngeal nerve?

The superior laryngeal nerve, a branch of the vagus nerve, innervates the cricothyroid muscle of the larynx. This muscle stretches, tenses, and adducts the vocal cord. Superior laryngeal neuralgia usually appears as a postsurgical complication.

What is laryngeal ventricle?

The laryngeal ventricle is a slitlike, mucosa-lined, space located between the true and false vocal cords. It is often seen on lateral radiographs of the neck as an air-filled space between the true and false vocal cords.

What are laryngeal muscles?

These are the infrahyoid (sternohyoid, omohyoid, sternothyroid, thyrohyoid) and suprahyoid muscles (stylohyoid, digastric, mylohyoid, geniohyoid) … Intrinsic muscles, which move the vocal cords in order to produce speech sounds.

What is the laryngeal inlet?

Anatomical Parts The laryngeal inlet (entrance of the larynx) is a triangular opening, wide in front, narrow behind, and sloping obliquely downward and backward.

What artery runs with internal laryngeal nerve?

The internal laryngeal nerve enters the larynx with the superior laryngeal artery and supplies sensation to the pharynx from the epiglottis and base of the tongue inferiorly to the vocal cords.

Is the larynx?

The larynx (/lrks/), commonly called the voice box, is an organ in the top of the neck involved in breathing, producing sound and protecting the trachea against food aspiration. The opening of larynx into pharynx known as the laryngeal inlet is about 45 centimeters in diameter.

What causes residue in the pyriform sinuses?

Dejaeger et al. [1] identified both pharyngeal constriction and pharyngeal shortening as factors relevant for the accumulation of pyriform sinus residue, and also implicated tongue driving force as a factor contributing to vallecular residue.

Where is the recurrent laryngeal nerve?

The recurrent laryngeal nerve (RLN), also known as the inferior laryngeal nerve, is a branch of the vagus nerve (CN X) which has a characteristic loop around the right subclavian artery on the right and the aortic arch on the left before returning up to achieve the tracheoesophageal groove and then the larynx.

What is the pharyngeal recess?

pharyngeal recess. [TA] a slitlike depression in the lateral membranous (nonmuscular) pharyngeal wall extending posterior to the opening of the pharyngotympanic (auditory) tube.

What is the pharynx anatomy?

pharynx, (Greek: throat) cone-shaped passageway leading from the oral and nasal cavities in the head to the esophagus and larynx. The pharynx chamber serves both respiratory and digestive functions. Thick fibres of muscle and connective tissue attach the pharynx to the base of the skull and surrounding structures.

What is carcinoma hypopharynx?

Hypopharyngeal cancer is a rare form of throat cancer. Healthcare providers also call it a head and neck cancer. It develops in the bottom part of the throat (called the hypopharynx), just behind your voicebox (larynx). Most hypopharyngeal cancers are squamous cell carcinoma.