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Gross Anatomy Assignment Name: Olorunfemi Peace Toluwalase Matric No: 17/Mhs01/257 Dept: Mbbs Course: Gross Anatomy of Head and Neck
GROSS ANATOMY ASSIGNMENT NAME: OLORUNFEMI PEACE TOLUWALASE MATRIC NO: 17/MHS01/257 DEPT: MBBS COURSE: GROSS ANATOMY OF HEAD AND NECK QUESTION 1 Write an essay on the carvernous sinus. The cavernous sinuses are one of several drainage pathways for the brain that sits in the middle. In addition to receiving venous drainage from the brain, it also receives tributaries from parts of the face. STRUCTURE ➢ The cavernous sinuses are 1 cm wide cavities that extend a distance of 2 cm from the most posterior aspect of the orbit to the petrous part of the temporal bone. ➢ They are bilaterally paired collections of venous plexuses that sit on either side of the sphenoid bone. ➢ Although they are not truly trabeculated cavities like the corpora cavernosa of the penis, the numerous plexuses, however, give the cavities their characteristic sponge-like appearance. ➢ The cavernous sinus is roofed by an inner layer of dura matter that continues with the diaphragma sellae that covers the superior part of the pituitary gland. The roof of the sinus also has several other attachments. ➢ Anteriorly, it attaches to the anterior and middle clinoid processes, posteriorly it attaches to the tentorium (at its attachment to the posterior clinoid process). Part of the periosteum of the greater wing of the sphenoid bone forms the floor of the sinus. ➢ The body of the sphenoid acts as the medial wall of the sinus while the lateral wall is formed from the visceral part of the dura mater. CONTENTS The cavernous sinus contains the internal carotid artery and several cranial nerves. Abducens nerve (CN VI) traverses the sinus lateral to the internal carotid artery. -
Õ“°“√§—¥®¡Ÿ° (Nasal Obstruction)
π“π“ “√– § ≈‘ π‘ ° Õ“°“√§—¥®¡Ÿ° (Nasal Obstruction) Õ“°“√§¥®¡— °Ÿ (Nasal Obstruction) Õ“°“√§—¥®¡Ÿ°‡ªìπÕ“°“√∑’Ëæ∫‰¥â∫àÕ¬„π‡«™ªØ‘∫—µ‘ ´÷ËßÕ“®‡ªìπÕ“°“√∑’Ëæ∫‰¥âµ“¡ª°µ‘ (´÷Ëßæ∫‡ªìπ à«ππâÕ¬ ‰¥â·°à Õ“°“√§—¥®¡Ÿ°∑’ˇ°‘¥®“°°“√∑’Ë®¡Ÿ°∑”ß“π ≈—∫¢â“ß°—πµ“¡∏√√¡™“µ‘ ∑’ˇ√’¬°«à“ nasal À√◊Õ turbinate cycle À√◊ÕÕ“°“√§—¥®¡Ÿ°∑’ˇ°‘¥®“°°“√‡ª≈’ˬπ∑à“∑“ß ‡™àπ πÕπµ–·§ß·≈â«§—¥®¡Ÿ°¢â“ß∑’ËπÕπ∑—∫Õ¬Ÿà ‡¡◊ËÕµ–·§ß‰ªÕ’°¥â“πÀπ÷Ëß ¥â“π∑’ˇ§¬§—¥®–°≈—∫‚≈àߢ÷Èπ ´÷Ë߇°‘¥®“°·√ߥ÷ߥŸ¥¢Õß‚≈°) À√◊Õ‡°‘¥®“°‚√§¢Õß®¡Ÿ°À≈“¬Ê ™π‘¥ (´÷Ëßæ∫‡ªìπ à«π¡“°) ·≈– ‡ªìπÕ“°“√∑’Ëæ∫∫àÕ¬Õ’°Õ“°“√Àπ÷Ëß∑’Ëπ”ºŸâªÉ«¬¡“À“·æ∑¬å ‡π◊ËÕß®“°¡—°∑”„À⺟âªÉ«¬√”§“≠ ·≈– ∑π∑ÿ°¢å∑√¡“π ·≈–¡’§ÿ≥¿“æ™’«‘µ·¬à≈ß „πª√–‡∑» À√—∞Õ‡¡√‘°“‰¥â‡§¬¡’ºŸâª√–‡¡‘π«à“¡’§à“„™â ®à“¬„π°“√√—°…“Õ“°“√§—¥®¡Ÿ° Ÿß∂÷ß 5 æ—π≈â“π‡À√’¬≠ À√—∞µàÕªï ·≈–¡’§à“„™â®à“¬ Ÿß∂÷ß 60 ≈â“π ‡À√’¬≠ À√—∞µàÕªï „π°“√∑”°“√ºà“µ—¥√—°…“Õ“°“√§—¥®¡Ÿ°1. §”®”°¥§«“¡— Õ“°“√§¥®¡— °‡ªŸ πÕ“°“√∑ì º’Ë ªŸâ «¬√É Ÿâ °À√÷ Õ‡¢◊ “„®«â “≈¡À√à ÕÕ“°“»∑◊ º’Ë “π‡¢à “À√â ÕÕÕ°®“°®¡◊ °Ÿ πâÕ¬°«à“ª°µ‘ ‚¥¬∑’Ë¡’≈¡À√◊ÕÕ“°“»∑’˺à“π‡¢â“À√◊ÕÕÕ°®“°®¡Ÿ°πâÕ¬®√‘ß (objective restriction of nasal cavity airflow) ‡π◊ËÕß®“°¡’§«“¡º‘¥ª°µ‘¢Õ߇¬◊ËÕ∫ÿ®¡Ÿ° À√◊Õ¡’ª√‘¡“≥πÈ”¡Ÿ°‡æ‘Ë¡¡“° ¢÷Èπ2 °“√∑’ˇ¬◊ËÕ∫ÿ®¡Ÿ° “¡“√∂√—∫√ŸâÕ“°“»∑’˺à“π‡¢â“À√◊ÕÕÕ°®“°®¡Ÿ° ‡™◊ËÕ«à“ºà“π∑“ßµ—«√—∫√Ÿâ —¡º— ·≈–Õÿ≥À¿Ÿ¡‘ (tactile and thermoreceptors) ∑’ËÕ¬Ÿà„π nasal vestibule ·≈–‡¬◊ËÕ∫ÿ®¡Ÿ° ´÷Ëß §«“¡‰«¢Õßµ—«√—∫√Ÿâ¥—ß°≈à“«®–πâÕ¬≈߇√◊ËÕ¬Ê ®“°¥â“πÀπⓉª¥â“πÀ≈—ß ‡ âπª√– “∑∑’Ë√—∫√ŸâÕ“°“» ª“√¬– Õ“»π–‡ π æ.∫., √Õß»“ µ√“®“√¬ å “¢“‚√§®¡°·≈–‚√§¿Ÿ ¡Ÿ ·æ‘ â ¿“§«™“‚ µ‘ π“ °‘ ≈“√ß´‘ «å ∑¬“‘ §≥–·æ∑¬»“ µ√»å √‘ √“™æ¬“∫“≈‘ ¡À“«∑¬“≈‘ ¬¡À— ¥≈‘ §≈‘π‘° ªï∑’Ë 29 ©∫—∫∑’Ë 4 ‡¡…“¬π 2556 235 ∑’˺à“π‡¢â“À√◊ÕÕÕ°®“°®¡Ÿ° §◊Õ ª√– “∑ ¡Õß§Ÿà∑’Ë 5 Õ“°“»„ÀâÕÿàπ·≈–™◊Èπ¢÷ÈππâÕ¬°«à“§πª°µ‘, ºŸâªÉ«¬‚√§ (ophthalmic and maxillary branch of trigeminal ®¡Ÿ°Õ—°‡ ∫¿Ÿ¡‘·æâ™π‘¥ƒ¥Ÿ°“≈∑’ËÕ¬ŸàπÕ°ƒ¥Ÿ°“≈À√◊Õ nerve). -
Dorsal Approach Rhinoplasty Dorsal Approach Rhinoplasty
AIJOC 10.5005/jp-journals-10003-1105 ORIGINAL ARTICLE Dorsal Approach Rhinoplasty Dorsal Approach Rhinoplasty Kenneth R Dubeta Part I: Historical Milestones in Rhinoplasty ABSTRACT Direct dorsal excision of skin and subcutaneous tissue is employed in rhinoplasty cases characterized by thick rigid skin to achieve satisfactory esthetic results, in which attempted repair by more conventional means would most likely frustrate both surgeon and patient. This historical review reminds us of the lesson: ‘History repeats itself.’ Built on a foundation of reconstructive rhinoplasty, modern cosmetic and corrective rhinoplasty have seen the parallel development of both open and closed techniques as ‘new’ methods are introduced and reintroduced again. It is from the perspective of constant evolution in the art of rhinoplasty surgery that the author presents, in Part II, his unique ‘eagle wing’ chevron incision technique of dorsal approach rhinoplasty, to overcome the problems posed by the rigid skin nose. Keywords: Dorsal approach rhinoplasty, Eagle wing incision, Fig. 1: Ancient Greek ‘perikephalea’ to support the Rigid skin nose, External approach rhinoplasty, Historical straightened nose1 milestones. How to cite this article: Dubeta KR. Dorsal Approach and functions of the nose. Refinement of these techniques Rhinoplasty. Int J Otorhinolaryngol Clin 2013;5(1):1-23. seemingly had to await three antecedent developments; Source of support: Nil topical vasoconstriction; topical, systemic and local Conflict of interest: None declared anesthesia; and safe, reliable sources of illumination. The last half of the 20th century has seen the dissemination of INTRODUCTION two of the most important developments in the history of Throughout the ages, numerous techniques of altering, nasal surgery: correcting and more recently, improving the appearance and 1. -
Name: Ofoegbu, Ebubechukwu .C. Matric Number: 17/Mhs01/232 Course Code: Gross Anatomy of Head and Neck Department: Medicine and Surgery Level: 300
NAME: OFOEGBU, EBUBECHUKWU .C. MATRIC NUMBER: 17/MHS01/232 COURSE CODE: GROSS ANATOMY OF HEAD AND NECK DEPARTMENT: MEDICINE AND SURGERY LEVEL: 300 Question 1) Write an essay on the cavernous sinuses. The dural venous sinuses include the superior sagittal, inferior sagittal, straight, transverse, sigmoid, and occipital sinuses, the confluence of sinuses, and the cavernous, sphenoparietal, superior petrosal, inferior petrosal, and basilar sinuses. CAVERNOUS SINUSES Diagram of the cavernous sinus The cavernous sinus, a large venous plexus, is located on each side of the sella turcica on the upper surface of the body of the sphenoid, which contains the sphenoid (air) sinus. They are enclosed by the endosteal and meningeal layers of the dura mater. The borders of the cavernous sinus are: i) Superior Orbital fissure anteriorly. ii) The Petrous part of the temporal bone posteriorly. iii) The body of sphenoid medially. iv) The meningeal layer of the dura mater running from the roof of the middle cranial fossa, laterally. v) The roof is formed by the meningeal layer of the dura mater that attaches to the anterior and middle clinoid processes of the sphenoid bone. vi) The floor is formed by the endosteal layer of the dura mater that overlies the base of the greater wing of sphenoid bone. The cavernous sinuses receive blood not only from cerebral veins, but also from the ophthalmic veins (from the orbit) and emissary veins (from the pterygoid plexus of veins in the infratemporal fossa). These connections provide pathways for infections to pass from extracranial sites into intracranial locations. In addition, because structures pass through the cavernous sinuses and are located in the walls of these sinuses they are vulnerable to injury due to inflammation. -
Nasal Cavity •
DR MOUIN ABBOUD pr of anatomy Faculity of medicin Damascus and sham universiies جهاز التنفس The Respiratory System مقدمة: • إن جهاز التنفس هو المسئول عن وظيفة التبادل الدموي الغازي وإضافة لذلك تقوم بعض أجزائه العلوية بإنتاج الصوت وضبطه • يتألف جهاز التنفس من: • أ ـ طرق تنفسية علوية وسفلية : يتم عبرها نقل الهواء الحامل لﻷكسجين بعد تهيئته إلى منطقة التبادل الدموي الغازي . • ب ـ الرئتين والتي تحتوي كل منها نهاية الطرق الهوائية منطقة التبادل الدموي الغازي والتي يصل إليها نهاية الشرايين الرئوية الحاملة لغاز الفحم . • ج ـ أجزاء مساعدة وضابطة )غشاء الرئة – الجدار الصدري – الحجاب الحاجز-الجهاز العصبي (. الطرق التنفسية العلوية في العنق • وهي: اﻷنف ـ البعلوم اﻷنفي ـ الحنجرة - الرغامى • وتكون هذه الطرق مبطنة بغشاء مخاطي غني باﻷوعية الدموية من أجل ترطيب الهواء الداخل وتدفئته. The Respiratory System in the Head and Neck • The Respiratory System in the Head and Neck are : – The nose and paranasal sinuses – The pharynx – The larynx – The trachea Respiratory System Figure 22.1 اﻷنف The Nose: • هو الجزء المتواجد في الوجه • ويتم عبره نقل الهواء كما يحتوي أعضاء الشم THE NOSE • The nose is an olfactory and respiratory organ. • It consists of nasal skeleton, which houses the nasal cavity • . The nose can be divided into : – The external nose . – The nasal cavity, both of which are divided by a septum into right and left halves وظائف اﻷنف • .1 تدفئة Warming و ترطيب Humidifying الهواء المستنشق. • .2 عملية تنظيف و احتجاز الغبار و العوامل الممرضة • .3 عملية الشم Smell . • .4 تنفتح عليه الجيوب الهوائية جانب اﻷنفية لتصريف المخاط الذي تنتجه، باﻹضافة إلى • القناة الدمعية التي تصرف الدمع إلى المجرى اﻷنفي. -
Variation in Nasal Morphology Affects Particle Deposition and Air Conditioning
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Carolina Digital Repository Variation in Nasal Morphology Affects Particle Deposition and Air Conditioning By Snigdha Das Senior Honors Thesis Department of Biology University of North Carolina at Chapel Hill March 21, 2017 Spring 2017 Approved: __________________________________ Dr. Julia S. Kimbell, Thesis Advisor Dr. Laura A. Miller, Reader Dr. Tyson L. Hedrick, Reader Table of Contents I.Abstract .................................................................................................................................3 II.Introduction .........................................................................................................................4 A. Context and Motivation ..................................................................................................4 B. Evolution and Nasal Morphology ...................................................................................5 C. Nasal Morphology Categorizations .................................................................................6 D. Nasal Drug Delivery .......................................................................................................8 E. Nasal Air Conditioning....................................................................................................8 i. Nasal Valve Area .........................................................................................................9 ii. Inferior Turbinate........................................................................................................9 -
Macroscopic Anatomy of the Nasal Cavity and Paranasal Sinuses of the Domestic Pig (Sus Scrofa Domestica) Daniel John Hillmann Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1971 Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) Daniel John Hillmann Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Animal Structures Commons, and the Veterinary Anatomy Commons Recommended Citation Hillmann, Daniel John, "Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica)" (1971). Retrospective Theses and Dissertations. 4460. https://lib.dr.iastate.edu/rtd/4460 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. 72-5208 HILLMANN, Daniel John, 1938- MACROSCOPIC ANATOMY OF THE NASAL CAVITY AND PARANASAL SINUSES OF THE DOMESTIC PIG (SUS SCROFA DOMESTICA). Iowa State University, Ph.D., 1971 Anatomy I University Microfilms, A XEROX Company, Ann Arbor. Michigan I , THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) by Daniel John Hillmann A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: Veterinary Anatomy Approved: Signature was redacted for privacy. h Charge of -^lajoï^ Wor Signature was redacted for privacy. For/the Major Department For the Graduate College Iowa State University Ames/ Iowa 19 71 PLEASE NOTE: Some Pages have indistinct print. -
Yagenich L.V., Kirillova I.I., Siritsa Ye.A. Latin and Main Principals Of
Yagenich L.V., Kirillova I.I., Siritsa Ye.A. Latin and main principals of anatomical, pharmaceutical and clinical terminology (Student's book) Simferopol, 2017 Contents No. Topics Page 1. UNIT I. Latin language history. Phonetics. Alphabet. Vowels and consonants classification. Diphthongs. Digraphs. Letter combinations. 4-13 Syllable shortness and longitude. Stress rules. 2. UNIT II. Grammatical noun categories, declension characteristics, noun 14-25 dictionary forms, determination of the noun stems, nominative and genitive cases and their significance in terms formation. I-st noun declension. 3. UNIT III. Adjectives and its grammatical categories. Classes of adjectives. Adjective entries in dictionaries. Adjectives of the I-st group. Gender 26-36 endings, stem-determining. 4. UNIT IV. Adjectives of the 2-nd group. Morphological characteristics of two- and multi-word anatomical terms. Syntax of two- and multi-word 37-49 anatomical terms. Nouns of the 2nd declension 5. UNIT V. General characteristic of the nouns of the 3rd declension. Parisyllabic and imparisyllabic nouns. Types of stems of the nouns of the 50-58 3rd declension and their peculiarities. 3rd declension nouns in combination with agreed and non-agreed attributes 6. UNIT VI. Peculiarities of 3rd declension nouns of masculine, feminine and neuter genders. Muscle names referring to their functions. Exceptions to the 59-71 gender rule of 3rd declension nouns for all three genders 7. UNIT VII. 1st, 2nd and 3rd declension nouns in combination with II class adjectives. Present Participle and its declension. Anatomical terms 72-81 consisting of nouns and participles 8. UNIT VIII. Nouns of the 4th and 5th declensions and their combination with 82-89 adjectives 9. -
Readingsample
Ear, Nose and Throat Diseases With Head and Neck Surgery Bearbeitet von Andrew Swift, Hans Behrbohm, Tadeus Nawka, Oliver Kaschke, Andrew C. Swift 1. Auflage 2009. Taschenbuch. XIV, 472 S. Paperback ISBN 978 3 13 671203 0 Format (B x L): 17 x 24 cm Gewicht: 575 g Weitere Fachgebiete > Medizin > Chirurgie > Kopf- & Halschirurgie schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. 116 2 Nose, Nasal Sinuses, and Face Applied Anatomy and Physiology in typical fractures of the nasal bones, but it may also be fractured in injuries to the central part of the face. The cartilaginous inferior portion is less at risk, ■ Basic Anatomy at least in mild blunt trauma, because of its elastic structure, but it is endangered in stab wounds, ■ External Nose lacerations, and gunshot injuries. The shape, posi- The supporting structure of the nose consists of tion, and properties of the bone and cartilage of the bone, cartilage, and connective tissue. Figure 2.1 nose have a considerable influence on the shape shows the most important elements. The bony and esthetic harmony of the face (see p. 212)and superior part of the nasal pyramid is often broken on the function of the nasal cavity. Fig. 2.1 The nasal skeleton. 1, Glabella; 2, nasal bone; 3, lateral nasal cartilage; 4, cartilaginous nasal septum; 5, alar cartilage with lateral (a) and medial crus (b); 6, nasal valve between the cranial alar and caudal lateral cartilages. -
Ministry of Education and Science of Ukraine Sumy State University 0
Ministry of Education and Science of Ukraine Sumy State University 0 Ministry of Education and Science of Ukraine Sumy State University SPLANCHNOLOGY, CARDIOVASCULAR AND IMMUNE SYSTEMS STUDY GUIDE Recommended by the Academic Council of Sumy State University Sumy Sumy State University 2016 1 УДК 611.1/.6+612.1+612.017.1](072) ББК 28.863.5я73 С72 Composite authors: V. I. Bumeister, Doctor of Biological Sciences, Professor; L. G. Sulim, Senior Lecturer; O. O. Prykhodko, Candidate of Medical Sciences, Assistant; O. S. Yarmolenko, Candidate of Medical Sciences, Assistant Reviewers: I. L. Kolisnyk – Associate Professor Ph. D., Kharkiv National Medical University; M. V. Pogorelov – Doctor of Medical Sciences, Sumy State University Recommended for publication by Academic Council of Sumy State University as а study guide (minutes № 5 of 10.11.2016) Splanchnology Cardiovascular and Immune Systems : study guide / С72 V. I. Bumeister, L. G. Sulim, O. O. Prykhodko, O. S. Yarmolenko. – Sumy : Sumy State University, 2016. – 253 p. This manual is intended for the students of medical higher educational institutions of IV accreditation level who study Human Anatomy in the English language. Посібник рекомендований для студентів вищих медичних навчальних закладів IV рівня акредитації, які вивчають анатомію людини англійською мовою. УДК 611.1/.6+612.1+612.017.1](072) ББК 28.863.5я73 © Bumeister V. I., Sulim L G., Prykhodko О. O., Yarmolenko O. S., 2016 © Sumy State University, 2016 2 Hippocratic Oath «Ὄμνυμι Ἀπόλλωνα ἰητρὸν, καὶ Ἀσκληπιὸν, καὶ Ὑγείαν, καὶ Πανάκειαν, καὶ θεοὺς πάντας τε καὶ πάσας, ἵστορας ποιεύμενος, ἐπιτελέα ποιήσειν κατὰ δύναμιν καὶ κρίσιν ἐμὴν ὅρκον τόνδε καὶ ξυγγραφὴν τήνδε. -
Radiographic Evaluation of the Nasal Cavity, Paranasal Sinuses and Nasopharynx for Sleep-Disordered Breathing
RADIOGRAPHIC EVALUATION OF THE NASAL CAVITY, PARANASAL SINUSES AND NASOPHARYNX FOR SLEEP-DISORDERED BREATHING Dania Tamimi, BDS, DMSc Diplomate, American Board of Oral and Maxillofacial Radiology ROLE OF CBCT • To discover the anatomic truth DISCOVER FACTORS THAT • Lead to Abnormal Upper Airway Anatomy • Increase Resistance • Cause Turbulent or Laminar Air Flow • Increase Collapsibility • Airway lumen • Soft tissue component • Osseous component CHECKLIST – EVALUATE FOR • Nasal obstruction • Sinus pathology • Nasopharynx pathology • Oropharyngeal morphologic predisposing factors and pathology • Maxillary and mandible morphologic predisposing factors • TMJs • Hyoid bone position • Evaluate for Head position (false positive or negative) • C-spine for pathology • Cranial base CHECKLIST – EVALUATE FOR • Nasal obstruction • Sinus pathology • Nasopharynx pathology • Oropharyngeal morphologic predisposing factors and pathology • Maxillary and mandible morphologic predisposing factors • TMJs • Hyoid bone position • Evaluate for Head position (false positive or negative) • C-spine for pathology • Cranial base NASAL CAVITY AND SINUSES • Patency of external and internal nasal valves • Morphology of nasal septum • Morphology and symmetry of turbinates • Patency of sinus drainage pathways • Presence of sinonasal pathology THE NOSE HAS THREE MAJOR FUNCTIONS 1. Breathing 2. Olfaction 3. Conditioning the air THE NASAL VALVE • Turbulence distributes the air in the nasal fossa for conditioning and olfaction. • When there is stenosis of the nasal valve, -
NASAL CAVITY and PARANASAL SINUSES, PTERYGOPALATINE FOSSA, and ORAL CAVITY (Grant's Dissector [16Th Ed.] Pp
NASAL CAVITY AND PARANASAL SINUSES, PTERYGOPALATINE FOSSA, AND ORAL CAVITY (Grant's Dissector [16th Ed.] pp. 290-294, 300-303) TODAY’S GOALS (Nasal Cavity and Paranasal Sinuses): 1. Identify the boundaries of the nasal cavity 2. Identify the 3 principal structural components of the nasal septum 3. Identify the conchae, meatuses, and openings of the paranasal sinuses and nasolacrimal duct 4. Identify the openings of the auditory tube and sphenopalatine foramen and the nerve and blood supply to the nasal cavity, palatine tonsil, and soft palate 5. Identify the pterygopalatine fossa, the location of the pterygopalatine ganglion, and understand the distribution of terminal branches of the maxillary artery and nerve to their target areas DISSECTION NOTES: General comments: The nasal cavity is divided into right and left cavities by the nasal septum. The nostril or naris is the entrance to each nasal cavity and each nasal cavity communicates posteriorly with the nasopharynx through a choana or posterior nasal aperture. The roof of the nasal cavity is narrow and is represented by the nasal bone, cribriform plate of the ethmoid, and a portion of the sphenoid. The floor is the hard palate (consisting of the palatine processes of the maxilla and the horizontal portion of the palatine bone). The medial wall is represented by the nasal septum (Dissector p. 292, Fig. 7.69) and the lateral wall consists of the maxilla, lacrimal bone, portions of the ethmoid bone, the inferior nasal concha, and the perpendicular plate of the palatine bone (Dissector p. 291, Fig. 7.67). The conchae, or turbinates, are recognized as “scroll-like” extensions from the lateral wall and increase the surface area over which air travels through the nasal cavity (Dissector p.