What does a nasopharynx do?

What does a nasopharynx do?

The upper floor, the nasopharynx, is primarily a passageway for air and secretions from the nose to the oral pharynx. It is also connected to the tympanic cavity of the middle ear through the auditory tubes that open on both lateral walls.

What is CA nasopharynx?

Parts of the throat (pharynx) Nasopharyngeal (nay-zoh-fuh-RIN-jee-ul) carcinoma is cancer that occurs in the nasopharynx, which is located behind your nose and above the back of your throat.

What does non Keratinizing mean?

Non-keratinizing squamous cell carcinoma is the most common type of cancer in both the tonsils and base of tongue. The tumour is called non-keratinizing because the tumour cells do not undergo a process called keratinization. This process is commonly seen in other tumours made up of squamous cells.

What is the nasopharynx lined by?

pseudostratified columnar ciliated epithelium
Normal Function. 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.

What is the difference between nasopharynx and pharynx?

The nasopharynx is the upper part of the pharynx. It is connected to the nose and is separated from the mouth by the soft area at the back of the roof of the mouth (called the soft palate). The base of the skull forms the top of the nasopharynx.

What is non Keratinizing nasopharyngeal carcinoma?

What is non-keratinizing squamous cell carcinoma of the nasopharynx? Non-keratinizing squamous cell carcinoma is a type of cancer that starts from the tissue at the back of the nose and throat. This part of the body is called the nasopharynx.

What does Keratinizing do to an epidermal cell?

Keratinization refers to the cytoplasmic events that occur in the cytoplasm of epidermal keratinocytes during their terminal differentiation. It involves the formation of keratin polypeptides and their polymerization into keratin intermediate filaments (tonofilaments).