In the posterior wall of the nasopharynx?

Last Update: April 20, 2022

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Asked by: Milo O'Conner
Score: 4.9/5 (31 votes)

The posterior wall of the nasopharynx is made up of four anatomic layers: the mucous membrane of the pharynx; the pharyngeal aponeurosis; the superior constrictor muscle of the pharynx; and the buccopharyngeal fascia, which is loosely connected with the adjacent prevertebral fascia.

What is located on the posterior wall of the nasopharynx?

The adenoids, also known as the pharyngeal tonsils, are lymphoid tissue structures located in the posterior wall of the nasopharynx. ... The auditory tube, which connects the middle ear to the pharynx, opens into the nasopharynx at the pharyngeal opening of the auditory tube.

What is behind the nasopharynx?

Behind the torus tubarius is a deep recess, the pharyngeal recess. The floor of the nasopharynx is formed by the soft palate, which forms a highly mobile partition between the nasopharynx and the back of the oral cavity. ... These converge on the soft palate from above and from below.

What structures are part of the nasopharynx?

The nasopharynx represents the most superior portion of the pharynx, bounded superiorly by the skull base and inferiorly by the soft palate. The nasopharynx connects the nasal cavity to the oropharynx and contains the Eustachian tube openings and adenoids.

What part is nasopharynx?

The upper part of the throat behind the nose. An opening on each side of the nasopharynx leads into the ear.

Nasopharynx and Oropharynx

16 related questions found

What is nasopharynx and its function?

Nasopharynx: It is situated in the space between the back of the nose and soft palate. It is continuous with the nasal cavity and forms the upper part of the respiratory system. It plays an important role in transferring air from the nose to the larynx.

Is nasopharynx a nose?

The nasopharynx is the upper part of the throat (pharynx) that lies behind the nose. It's a box-like chamber about 1½ inches on each edge. It lies just above the soft part of the roof of the mouth (soft palate) and just in back of the nasal passages.

Which tonsils are found in the posterior wall of the nasopharynx quizlet?

The pharyngeal tonsil is located in the posterior wall of the nasopharynx and is referred to as the adenoids if it is enlarged.

Does food pass through the nasopharynx?

Air passes backward through the nasal cavity, and the nasopharynx. Food and liquid pass backward through the oral cavity. ... Air, food and liquid all pass through this common passage, the oropharynx. The two passages separate again here, in the hypopharynx.

Is nasopharynx part of the digestive system?

Pharynx. The pharynx is part of the digestive and respiratory systems and consists of three main parts: the nasopharynx, oropharynx, and laryngopharynx.

What is the nasopharynx lined with?

The nasopharynx is lined by pseudostratified columnar ciliated epithelium with goblet cells (Dungworth, 1993). Abundant lymphoid nodules are present in the submucosa. The eustachian tubes extend from the middle ear to the nasal cavity.

Is the posterior wall of the mouth?

Normal Anatomy

The oral cavity lies anterior to the oropharynx and is separated from it by the circumvallate papillae; soft palate; and anterior tonsillar pillars, which make up its posterior boundary.

What is the nerve supply to the nasopharynx?

The nasopharynx afferent innervation is dominantly provided by cranial nerve V2 anterior to the eustachian orifice and cranial nerve IX posterior to the tubal orifice. Motor innervation is dominated by pharyngeal branches of cranial nerves IX and X and sympathetic fibers from the superior cervical ganglion.

What is difference between larynx and pharynx?

The main difference between pharynx and larynx is that pharynx is a part of an alimentary canal, which extends from the nasal cavity and mouth to the larynx and the esophagus whereas larynx is the upper portion of the trachea. ... The larynx is also called the vocal box since it contains vocal cords.

What is the area behind the uvula called?

The nasopharynx is the portion of the pharynx that is posterior to the nasal cavity and extends inferiorly to the uvula. The oropharynx is the portion of the pharynx that is posterior to the oral cavity.

What are the three parts of pharynx?

It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx.

What blocks the nasopharynx during swallowing?

During swallowing, the soft palate is pulled up, causing it to press against the posterior pharyngeal wall. When elevated in this way, it completely blocks and separates the nasal cavity and nasal portion of the pharynx from the mouth and the oral part of the pharynx.

Is the larynx is posterior to the esophagus?

The larynx is posterior to the esophagus. inferior Section: ction: Midsagittal sectional Section Sagittal Left :....:: ::.. Divides the body into asymmetrical right and left sections. ... Divides the body horizontally into superior and inferior sections.

Which is first pharynx or esophagus?

The pharynx, or throat, is the passageway leading from the mouth and nose to the esophagus and larynx. The pharynx permits the passage of swallowed solids and liquids into the esophagus, or gullet, and conducts air to and from the trachea, or windpipe, during respiration.

Which structure is the pharyngeal tonsil located in?

The pharyngeal tonsils are located near the opening of the nasal cavity into the pharynx. When these tonsils become enlarged they may interfere with breathing and are called adenoids. The palatine tonsils are the ones that are located near the opening of the oral cavity into the pharynx.

What is it called when the pharyngeal tonsil becomes enlarged?

A pharyngeal tonsil is found in the posterior wall of the NASOPHARYNX. When the pharyngeal tonsil becomes enlarged, it is called ADENIODS. Lingual tonsils are located along the posterior one-third of the TONGUE. Within the tonsils are LYMPHATIC NODULES that help protect against foreign substances.

What are pharyngeal tonsils known as?

Adenoids, also called Pharyngeal Tonsils, a mass of lymphatic tissue, similar to the (palatine) tonsils, that is attached to the back wall of the nasal pharynx (i.e., the upper part of the throat opening into the nasal cavity proper). An individual fold of such nasopharyngeal lymphatic tissue is called an adenoid.

What is stage 4 nasopharyngeal carcinoma?

In stage IVB, cancer has spread beyond the lymph nodes in the neck to distant lymph nodes, such as those between the lungs, below the collarbone, or in the armpit or groin, or to other parts of the body, such as the lung, bone, or liver.

What are the signs of nasopharyngeal cancers?

Symptoms of nasopharyngeal cancer can include:
  • a lump in the neck.
  • hearing loss (usually only in 1 ear)
  • tinnitus (hearing sounds that come from inside the body rather than from an outside source)
  • a blocked or stuffy nose.
  • nosebleeds.

How do you test for nasopharynx?

This test uses a thin, flexible tube with a camera on the end to see inside your nasopharynx and look for abnormalities. The camera may be inserted through your nose or through the opening in the back of your throat that leads up into your nasopharynx. Nasal endoscopy may require local anesthesia.