4 décembre 2022
Vestibule of Nose Anatomy Definition
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Limen Naris: Limen Naris is a mucous crest that refers to the posterior edge of the nasal vestibule and the anterior edge of the actual nasal cavity. [1] [6] [5] [7] 10 The nasal vestibule is lined with thin hairy skin and there is a sudden change in the non-ciliated nasal mucosa above the base of the ventral nasal turbinate. The primary branch of ICA that supplies the nasal cavity is the ocular artery. From the ophthalmic artery come the anterior and posterior ethmoius artery as well as the dorsal nasal artery. The anterior ethmoid artery supplies the lateral nasal wall and nasal septum. The posterior ethmoid artery feeds the superior nasal conch and nasal septum. The dorsal nasal artery supplies the dorsal surface of the outer nose. [1] [2] Procerus originates from the nasal bone and superior lateral cartilage, while it is inserted onto the skin above the glabella. The function of the Procerus is to bend the skin above the bridge of the nose by pulling down the medial angle of the eyebrows. [21] [22] Septi depressants start on the upper jaw above the central incisors and begin in the anterior septum. The main function of this muscle is to pull the nose down. [21] [22] The advantage of this technique is that it causes little nasal deformity.
It can widen the back, but this compromise is generally acceptable because it improves the function of the nose as it can relieve obstruction. Nasal squamous apillomas may originate from the transitional, respiratory or metaplastic olfactory epithelium or the squamous epithelium of the nasal vestibule. Normally, papillomas consist of an exophytic mass of uniform, regularly arranged squamous cells that form papillary or filiform structures covering a vascularized connective tissue stem. Transitional and respiratory epithelial cells can sometimes be included as a minor component. In general, the basement membrane is intact. Sometimes squamous fillomimes develop below the mucous surface. Despite the same essential structural components as the rest of the world, the nose is unique among individuals. Genetics and environmental variation have led to evolutionary changes in the anatomy of the nose within our species. The shape of the nostrils, the angle of the tip of the nose and the width of the bridge of the nose are examples of visible variations that give each person a pronounced nose. [23] The nasal contribution to smell is closely related to nasal airflow and the integrity of the nasal mucosa. Odorants in the inspired air pass through the nasal passage through the nasal vestibule and nasal cavity to eventually connect to olfactory receptors located in the olfactory neuroepithelium, located on the upper nasal septum, olfactory cleft, and parts of the upper and middle nasal turbinates (Cullen and Leopold, 1999; Leopold et al., 2000; Raviv and Kern, 2004; Zhao and Frye, 2015). On this pathway, air passes through areas of limited cross-section, such as the internal nasal valve and nasal turbinates, which make the airflow turbulent, facilitating the release of odor into the olfactory epithelium.
Approximately 15% of inhaled air is diverted to the olfactory slit (Hahn et al., 1993; Wrobel and Leopold, 2004b). This sequence of airflow, called the orthonasal sense of smell, has traditionally been conceived as the primary mechanism of smell mediation (Heilmann and Hummel, 2004). Odorants can also be perceived by the retrograde passage of odorants from the oral cavity and oropharynx into the nose via the nasopharynx, known as retronasal olfactory perception (Ni et al., 2015). This process is considered an important mediator of taste perception and probably contributes to the perception of expressed loss of taste in patients with primary olfactory disorder (Hadley et al., 2004). The nasal cavity is a large air-filled space above and behind the nose in the middle of the face. The nasal septum divides the cavity into two cavities[1], also called fossa. [2] Each cavity is the continuation of one of the two nostrils. The nasal cavity is the upper part of the airways and provides the nasal passage for inhaled air from the nostrils to the nasopharynx and the rest of the airways. Congenital diseases of the nose should be treated, as newborns breathe through the nose. Some signs that a nasal disorder is present include cyanosis during eating, which improves with crying, growth retardation, and tachypnea. For an open approach: An 11 blade is used to make an inverted V transcylindrical cut.
Marginal incisions are made in the vestibule of each nostril. The soft tissues are lifted by the medial crusts of the lower lateral cartilage, taking care not to disturb this delicate cartilage. Inverted scissors are used to create a subperi-osté plane that allows for clean dissection. The tissue is raised laterally after each lower lateral cartilage. By exposing cartilage, several problem areas can be corrected by the same approach. JNA is the most common vascular mass in the nasal cavity. It is usually seen in adolescent men with recurrent epistaxis and even nasal obstruction. The place where it is most often encountered is the roof of the nasal cavity near the foramen sphenopalatine.
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