Normal anatomy and anatomic variants of the paranasal sinuses. External nose internal nose musculature of nose vascular supply, nervous innervation and lymphatic drainage paranasal sinuses 3. Several variants of the paranasal sinuses are of primary importance in surgical planning. Surgical anatomy of the paranasal sinus thieme medical publishers. Acquired cysts are of unknown cause but may share a common pathogenesis with ethmoid hematoma. The air sinuses, four on each side, are cavities in the bones that adjoin the nose. The lecture discussing the basic ct anatomy of the paranasal sinuses and normal anatomical variants. In considering the anatomy and physiology of the nose, this chapter must inevitably pay some attention to the adjacent paranasal sinuses, forming as they do an. Paranasal sinuses are air filled hollow sacs seen around the skull bone. The surgical anatomy of the nose and paranasal sinuses is published with great detail in most standard textbooks, but it is the purpose of this chapter to describe those structures in a very clear and. There are four paired sinuses surrounding the nasal cavity. Disorders of the upper respiratory tract 26 disorders of the paranasal sinuses 395 6 3 5 4 2 1 8 4 6 3 11 10 9 1 2 7 5 8 1 2 5 a c b fig. Openings of sinuses anterior and middle ethmoidal, frontal, maxillary. Pathology of the nasal cavity and paranasal sinuses.
He has intensively researched the anatomy of these structures for a quarter of a century, with emphasis on exact measurements of these vital structures as they relate to surgical intervention. This lecture is a part of basic radiologic anatomy series. The surgical anatomy of the nose and paranasal sinuses is published with great detail in most standard textbooks, but it is the purpose of this chapter to describe. Anatomy of nose and paranasal sinus linkedin slideshare. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Surgical anatomy of the paranasal sinuses university of. Nurul syazwani ramli paranasal sinuses the paranasal sinuses are aircontaining cavities found in the interior of the maxilla, frontal, sphenoid, and ethmoid bones they are lined with mucoperiosteum and filled with air they communicate with the nasal cavity through relatively small apertures the maxillary and ethmoid sinuses are present in a rudimentary form at. Full text full text is available as a scanned copy of the original print version. Nasal vestibule is part of external nose and is lined by skin and contains hair called vibrissae it is. The paranasal sinuses are group of air filled spaces surrounding the nasal cavity. Request pdf on jan 4, 2018, kivanc kamburoglu and others published anatomy of the nose and paranasal sinuses find, read and cite all the research you need on researchgate. Differential diagnosis all causes of obstruction of the maxillary sinus that might induce fluid levels or persistent sinusitis. Endoscopic anatomy of the paranasal sinuses peter s. A good knowledge of the anatomy of the paranasal sinuses, the clinical significance of anatomical variants, and the terminology used in functional endoscopic sinus surgery is basic to the correct.
The paranasal sinuses structure function teachmeanatomy. They are outgrowths from the nasal cavity and retain their communications with it by means of drainage openings, or ostia. The paranasal sinuses the paranasal sinuses are cavities found in the interior of the maxilla, frontal, sphenoid, and ethmoid bones. Clinical anatomy of the nose, nasal cavity and paranasal sinuses. Radiology of the nasal cavity and paranasal sinuses ento key. Pdf surgical anatomy of the nasal cavity and paranasal. In considering the anatomy and physiology of the nose, this chapter must inevitably pay some attention to the adjacent paranasal sinuses, forming as they do an integral functional structure and subject to the same pathophysiological processes. Comparative anatomy and physiology of the nose and paranasal. Acute sinusitis is a shortterm condition that responds well to antibiotics and decongestants. Mucosal swelling, polyps, and altered properties of secretion that. Dec 24, 20 the paranasal sinuses, which are carefully hidden from the eye inside the bones of the skull, have repeatedly puzzled anatomists of the past.
Imagingof the paranasal sinuses and inoffice ct pauld. Surgical anatomy of the nasal cavity and paranasal sinuses. Anatomy of the nasal cavity and paranasal sinuses neupsy key. Study 74 anatomyphysiology of the nose and paranasal sinuses flashcards from michael r. There are four paired sinuses, named according to the bone in which they are located. Tips and pearls the nasal cavity is a natural pathway to the anterior cranial fossae, orbit, pterygopalatine and infratemporal fossae. These are large number of intercommunicating cavities present inside the ethmoid bone and open into the nose.
Of the structure and function of both the nasal cavity and the paranasal sinuses, with the. Humans possess four paired paranasal sinuses, divided into subgroups that are named according to the bones within which the sinuses lie. They have thin walls which are often penetrated by the long roots of the posterior maxillary teeth. The junction between the roof and anterior wall is usually smooth. Apr 29, 2020 the maxillary sinuses are the largest of the all the paranasal sinuses. During fetal development, the paranasal sinuses originate as invaginations of the nasal mucosa into the lateral nasal wall, frontal, ethmoid, maxilla and sphenoid bones. Jameszinreich,md,nafiaygun,md since the introduction of functional endoscopic sinus surgery fess in the united states in 1985, the information gained from imaging of the nasal cavity and paranasal sinuses has proved imperative in understanding the regional morphology and. Senior, md, facs, fars sheila and nathaniel harris professor of otolaryngologyhead and neck surgery and neurosurgery university of north carolina at chapel hill. Anatomy and physiology of the nose and paranasal sinuses. If you continue browsing the site, you agree to the use of cookies on this website. Approaches to the sinuses through a frontonasal bone. Pdf paranasal sinus anatomy and function fenny duma. Anatomy and physiology of the nasal cavity and paranasal sinuses.
The maxillary sinuses, the largest of the paranasal sinuses, are under the eyes, in the maxillary bones open in the back of the semilunar hiatus of the nose. Physiology of the nose and paranasal sinuses springerlink. Clinical examination techniques of nose and paranasal sinuses. Tenderness if it is present over the nasal bone area then fracture nasal bone must be suspected. This presentation describes anatomy of paranasal sinuses slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The paranasal sinuses are ventilated spaces connected to the nasal cavity. The ostiomeatal complex within the narrow cleft of the middle meatus is susceptible to obstructions of mucociliary flow from the sinuses.
Three to eighteen 5 air cells present in the ethmoid labyrinth, on both sides of the nose, between the eyes 6, 7. May 23, 2016 the usual parameters for ct examination of the paranasal sinuses include a slice thickness of 3 mm, a 12 to 15cm display field of view, 250 ma, a 1second slice acquisition time, 120 kvp, bone and softtissue algorithms, and both axial and coronal sections through the entire sinuses. The surgical anatomy of the nose and paranasal sinuses is published with great detail in most standard textbooks, but it is the purpose of this chapter to describe those structures in a very clear and systematic. Evolution of the paranasal sinuses anatomy through the ages. Paranasal sinus cysts are benign, expansile masses originating from the paranasal sinuses. Mar 29, 2017 this lecture is a part of basic radiologic anatomy series. Learn paranasal sinuses with free interactive flashcards. The paranasal sinuses are airfilled extensions of the respiratory part of the nasal cavity. Anatomy of the paranasal sinuses southern states rhinology. Choose from 500 different sets of paranasal sinuses flashcards on quizlet. Yet, a careful study of this view provides such valuable information as the depth of the frontal sinuses, the thickness of the outer table of the frontal bone, the extent of the sphenoid sinus pneumatization, the clarity of the ethmoid cell walls, and the general size and contour of the maxillary sinuses and the soft tissue structures in the. Ethmoid air cell variants include a prominent agger nasi cell, type iiv frontal cells, prominent ethmoid bullae, haller cell, and onodi cell. The surgeon learns to recognize the typical contours, usu.
Comparative anatomy and physiology of the nose and. It is thought that they may contribute to the humidifying of the inspired air. These are 2 sinuses which lie inside the body of sphenoid and are separated from each other by a bony septum. Sinusitis is an inflammation of the membrane lining of any sinus, especially one of the paranasal sinuses. Anatomy of nose, paranasal sinuses linkedin slideshare. They develop as blind ending pouches between the lamina of the bones of the skull. Periapical pathology with inflammation and osteolysis. May 11, 2010 this presentation describes anatomy of paranasal sinuses slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The paranasal sinus region is one of the most complex areas of the human body and is consequently very difficult to study. Understanding the anatomy of the paranasal sinuses is probably the most important prerequisite for endoscopic sinus surgery ess. Also important, but less so, is that they can increase the likelihood of developing sinus disease. The paranasal sinuses are a series of cavities arranged one after another. Get a printable copy pdf file of the complete article 348k, or click on a page image below to browse page by page. They are lined with mucoperiosteum and filled with air.
The largest among all the paranasal sinuses 2, these two conical cavities are located on the two sides of the nose, above the upper teeth, and below the cheeks 4. Anatomy and physiology of the nose and paranasal sinuses external nose the external nose is pyramidal in shape the ant. They consist of two separate clinical entities, developmental and acquired. The entire subject of anatomy of paranasal sinuses has been rewritten after endoscopes were started to be used commonly. Performing a smooth and clean sinus surgery goes hand in hand with a perfect understanding of the nasal and paranasal anatomy. Anatomyphysiology of the nose and paranasal sinuses. This material was prepared by resident physicians in partial fulfillment of educational requirements established for the postgraduate training program of the utmb department of otolaryngologyhead and neck surgery and was not intended for. Anatomically, the paranasal sinuses are in close proximity to the anterior cranial fossa, the cribriform plate, the internal carotid arteries, the cavernous sinuses, the orbits and their contents, and the optic nerves as they exit the orbits. Computed tomography anatomy of the paranasal sinuses and. Anatomy of nose and paranasal sinuses nasal vestibule.
Nares situated in the base of the nose and open downwards they are separated by columella bony constituents support the upper part of the external nose. Presumably, because they are closely related to vital organs of the human body, such as the brain, eye, nose, and mouth, many peculiar theories about their function have been developed since years. Pdf paranasal sinuses are air filled hollow sacs seen around the skull bone. The superior border of this sinus is the bony orbit, the inferior is the maxillary alveolar bone and corresponding tooth roots, the medial border is made up of the nasal cavity and the lateral and anterior border are limited. Paranasal sinuses an overview sciencedirect topics. Developmental cysts occur in young horses and are usually of dental origin.
1018 527 1500 517 938 1245 1319 441 233 213 790 698 833 378 237 1027 41 553 1100 1011 1443 433 219 15 1035 537 728 301 873 65 804 307 288 1253 560 1458 1279 535 111 1210 177 325 735 171 35 886 535 480 1223