Inferior View of Skull
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A Study of Occurrence and Types of Suprameatal Spines in the Suprameatal Triangle
ISSN: 2455-2631 © March 2021 IJSDR | Volume 6, Issue 3 A STUDY OF OCCURRENCE AND TYPES OF SUPRAMEATAL SPINES IN THE SUPRAMEATAL TRIANGLE Preetha Parthasarathy Under graduate SIMATS Saveetha Dental College, 162, Poonamalle high road, Velappanchavadi, Chennai- 600095. India. Mrs. M.S. Thenmozhi Dept of Anatomy SIMATS Saveetha Dental College, 162, Poonamalle high road, Velappanchavadi, Chennai- 600095. India. Corresponding author: Mrs. Thenmozhi. M.S Dept of anatomy SIMATS Saveetha dental college, Velappanchavadi Chennai-600095 India Running title: Types of suprameatal spines ABSTRACT: AIM: To identify the occurrence and types of suprameatal spines on either sides of the skull in the suprameatal triangle and to study their clinic implications. OBJECTIVE: To figure out the presence of suprameatal spines in the suprameatal triangle and to review the literature on anatomical and clinic aspects of suprameatal triangle. INTRODUCTION: Suprameatal triangle is present between the posterior wall of external acoustic meatus and posterior root of zygomatic process, in the temporal bone. It is also called as Macewen’s triangle. Suprameatal spine is seen below the upper limit of the orifice of the inner end of external acoustic meatus which is closed by tympanic membrane. It is also called as spine of Henle. RESULT: From the above conducted study, it can be seen that, when the suprameatal spines were evaluated according to its type and occurrence, the crest type of spine present was more than the triangle type. The crest type of spine was found to be 62.2% and the triangle type of spine was about 37.8% CONCLUSION: Thus, this study shows the prevalence of crest and triangle type spine in the dry skulls evaluated. -
Questions on Human Anatomy
Standard Medical Text-books. ROBERTS’ PRACTICE OF MEDICINE. The Theory and Practice of Medicine. By Frederick T. Roberts, m.d. Third edi- tion. Octavo. Price, cloth, $6.00; leather, $7.00 Recommended at University of Pennsylvania. Long Island College Hospital, Yale and Harvard Colleges, Bishop’s College, Montreal; Uni- versity of Michigan, and over twenty other medical schools. MEIGS & PEPPER ON CHILDREN. A Practical Treatise on Diseases of Children. By J. Forsyth Meigs, m.d., and William Pepper, m.d. 7th edition. 8vo. Price, cloth, $6.00; leather, $7.00 Recommended at thirty-five of the principal medical colleges in the United States, including Bellevue Hospital, New York, University of Pennsylvania, and Long Island College Hospital. BIDDLE’S MATERIA MEDICA. Materia Medica, for the Use of Students and Physicians. By the late Prof. John B Biddle, m.d., Professor of Materia Medica in Jefferson Medical College, Phila- delphia. The Eighth edition. Octavo. Price, cloth, $4.00 Recommended in colleges in all parts of the UnitedStates. BYFORD ON WOMEN. The Diseases and Accidents Incident to Women. By Wm. H. Byford, m.d., Professor of Obstetrics and Diseases of Women and Children in the Chicago Medical College. Third edition, revised. 164 illus. Price, cloth, $5.00; leather, $6.00 “ Being particularly of use where questions of etiology and general treatment are concerned.”—American Journal of Obstetrics. CAZEAUX’S GREAT WORK ON OBSTETRICS. A practical Text-book on Midwifery. The most complete book now before the profession. Sixth edition, illus. Price, cloth, $6.00 ; leather, $7.00 Recommended at nearly fifty medical schools in the United States. -
Morfofunctional Structure of the Skull
N.L. Svintsytska V.H. Hryn Morfofunctional structure of the skull Study guide Poltava 2016 Ministry of Public Health of Ukraine Public Institution «Central Methodological Office for Higher Medical Education of MPH of Ukraine» Higher State Educational Establishment of Ukraine «Ukranian Medical Stomatological Academy» N.L. Svintsytska, V.H. Hryn Morfofunctional structure of the skull Study guide Poltava 2016 2 LBC 28.706 UDC 611.714/716 S 24 «Recommended by the Ministry of Health of Ukraine as textbook for English- speaking students of higher educational institutions of the MPH of Ukraine» (minutes of the meeting of the Commission for the organization of training and methodical literature for the persons enrolled in higher medical (pharmaceutical) educational establishments of postgraduate education MPH of Ukraine, from 02.06.2016 №2). Letter of the MPH of Ukraine of 11.07.2016 № 08.01-30/17321 Composed by: N.L. Svintsytska, Associate Professor at the Department of Human Anatomy of Higher State Educational Establishment of Ukraine «Ukrainian Medical Stomatological Academy», PhD in Medicine, Associate Professor V.H. Hryn, Associate Professor at the Department of Human Anatomy of Higher State Educational Establishment of Ukraine «Ukrainian Medical Stomatological Academy», PhD in Medicine, Associate Professor This textbook is intended for undergraduate, postgraduate students and continuing education of health care professionals in a variety of clinical disciplines (medicine, pediatrics, dentistry) as it includes the basic concepts of human anatomy of the skull in adults and newborns. Rewiewed by: O.M. Slobodian, Head of the Department of Anatomy, Topographic Anatomy and Operative Surgery of Higher State Educational Establishment of Ukraine «Bukovinian State Medical University», Doctor of Medical Sciences, Professor M.V. -
1A. Internal Auditory Meatus
1a. Internal Auditory Meatus 1. The facial nerve leaves the posterior cranial fossa to enter the facial canal by way of the internal auditory meatus (black wire). The facial canal is within the petrous part of the temporal bone. 1b. Internal Auditory Meatus The facial nerve leaves the posterior cranial fossa to enter the facial canal by way of the internal auditory meatus (black wire). 2. Hiatus of the Canal and Groove for the Greater Superficial Petrosal Nerve The greater superficial petrosal nerve leaves the facial canal to enter the middle cranial fossa by way of the hiatus of the canal for the greater superficial petrosal nerve (black wire). 3. Pterygoid Canal at Anterior Lip of the Lacerate Foramen The greater superficial petrosal nerve is joined by the deep petrosal nerve to form the nerve of the pterygoid canal (black and red wire). This nerve leaves the middle cranial fossa to enter the pterygopalatine fossa by way of the pterygoid canal. The posterior opening of the pterygoid canal is at the anterior lip of the lacerate foramen. The greater superficial nerve and the deep petrosal nerve travel within the cavernous sinus. 4. Pterygopalatine Fossa Seen Through the Pterygomaxillary Fissure The anterior opening of the pterygoid canal is into the pterygopalatine fossa (black wire). The pterygopalatine fossa is located medial to the pterygomaxillary fissure and contains the pterygopalatine ganglion. 5. External Auditory Meatus The chorda tympani nerve leaves the facial canal and crosses the middle ear (black wire). It then leaves the middle ear to arrive in the infratemporal fossa by way of the petrotympanic fissure. -
Lab Manual Axial Skeleton Atla
1 PRE-LAB EXERCISES When studying the skeletal system, the bones are often sorted into two broad categories: the axial skeleton and the appendicular skeleton. This lab focuses on the axial skeleton, which consists of the bones that form the axis of the body. The axial skeleton includes bones in the skull, vertebrae, and thoracic cage, as well as the auditory ossicles and hyoid bone. In addition to learning about all the bones of the axial skeleton, it is also important to identify some significant bone markings. Bone markings can have many shapes, including holes, round or sharp projections, and shallow or deep valleys, among others. These markings on the bones serve many purposes, including forming attachments to other bones or muscles and allowing passage of a blood vessel or nerve. It is helpful to understand the meanings of some of the more common bone marking terms. Before we get started, look up the definitions of these common bone marking terms: Canal: Condyle: Facet: Fissure: Foramen: (see Module 10.18 Foramina of Skull) Fossa: Margin: Process: Throughout this exercise, you will notice bold terms. This is meant to focus your attention on these important words. Make sure you pay attention to any bold words and know how to explain their definitions and/or where they are located. Use the following modules to guide your exploration of the axial skeleton. As you explore these bones in Visible Body’s app, also locate the bones and bone markings on any available charts, models, or specimens. You may also find it helpful to palpate bones on yourself or make drawings of the bones with the bone markings labeled. -
ANATOMY of EAR Basic Ear Anatomy
ANATOMY OF EAR Basic Ear Anatomy • Expected outcomes • To understand the hearing mechanism • To be able to identify the structures of the ear Development of Ear 1. Pinna develops from 1st & 2nd Branchial arch (Hillocks of His). Starts at 6 Weeks & is complete by 20 weeks. 2. E.A.M. develops from dorsal end of 1st branchial arch starting at 6-8 weeks and is complete by 28 weeks. 3. Middle Ear development —Malleus & Incus develop between 6-8 weeks from 1st & 2nd branchial arch. Branchial arches & Development of Ear Dev. contd---- • T.M at 28 weeks from all 3 germinal layers . • Foot plate of stapes develops from otic capsule b/w 6- 8 weeks. • Inner ear develops from otic capsule starting at 5 weeks & is complete by 25 weeks. • Development of external/middle/inner ear is independent of each other. Development of ear External Ear • It consists of - Pinna and External auditory meatus. Pinna • It is made up of fibro elastic cartilage covered by skin and connected to the surrounding parts by ligaments and muscles. • Various landmarks on the pinna are helix, antihelix, lobule, tragus, concha, scaphoid fossa and triangular fossa • Pinna has two surfaces i.e. medial or cranial surface and a lateral surface . • Cymba concha lies between crus helix and crus antihelix. It is an important landmark for mastoid antrum. Anatomy of external ear • Landmarks of pinna Anatomy of external ear • Bat-Ear is the most common congenital anomaly of pinna in which antihelix has not developed and excessive conchal cartilage is present. • Corrections of Pinna defects are done at 6 years of age. -
MBB: Head & Neck Anatomy
MBB: Head & Neck Anatomy Skull Osteology • This is a comprehensive guide of all the skull features you must know by the practical exam. • Many of these structures will be presented multiple times during upcoming labs. • This PowerPoint Handout is the resource you will use during lab when you have access to skulls. Mind, Brain & Behavior 2021 Osteology of the Skull Slide Title Slide Number Slide Title Slide Number Ethmoid Slide 3 Paranasal Sinuses Slide 19 Vomer, Nasal Bone, and Inferior Turbinate (Concha) Slide4 Paranasal Sinus Imaging Slide 20 Lacrimal and Palatine Bones Slide 5 Paranasal Sinus Imaging (Sagittal Section) Slide 21 Zygomatic Bone Slide 6 Skull Sutures Slide 22 Frontal Bone Slide 7 Foramen RevieW Slide 23 Mandible Slide 8 Skull Subdivisions Slide 24 Maxilla Slide 9 Sphenoid Bone Slide 10 Skull Subdivisions: Viscerocranium Slide 25 Temporal Bone Slide 11 Skull Subdivisions: Neurocranium Slide 26 Temporal Bone (Continued) Slide 12 Cranial Base: Cranial Fossae Slide 27 Temporal Bone (Middle Ear Cavity and Facial Canal) Slide 13 Skull Development: Intramembranous vs Endochondral Slide 28 Occipital Bone Slide 14 Ossification Structures/Spaces Formed by More Than One Bone Slide 15 Intramembranous Ossification: Fontanelles Slide 29 Structures/Apertures Formed by More Than One Bone Slide 16 Intramembranous Ossification: Craniosynostosis Slide 30 Nasal Septum Slide 17 Endochondral Ossification Slide 31 Infratemporal Fossa & Pterygopalatine Fossa Slide 18 Achondroplasia and Skull Growth Slide 32 Ethmoid • Cribriform plate/foramina -
Sphenoid Bone and Its Sinus — Anatomo-Clinical Review of the Literature Including Application to FESS
FOLIA MEDICA CRACOVIENSIA Vol. LIX, 2, 2019: 45–59 PL ISSN 0015-5616 DOI: 10.24425/fmc.2019.128453 Sphenoid bone and its sinus — anatomo-clinical review of the literature including application to FESS Joanna Jaworek-Troć1, Michał Zarzecki1, Anna Bonczar2, Lourdes N. Kaythampillai1, Bartosz Rutowicz1, Małgorzata Mazur1, Jacenty Urbaniak1, Wojciech Przybycień1, Katarzyna Piątek-Koziej1, Marcin Kuniewicz1, Marcin Lipski1, Wojciech Kowalski3, Janusz Skrzat1, Marios Loukas4, Jerzy Walocha1 1Department of Anatomy, Jagiellonian University Medical College, Kraków, Poland 2K. Gibiński’s University Center of Silesian Medical University, Katowice, Poland 3Medical Offi ces, Kraków, Poland 4Department of Anatomy, St. Georges University, Grenada, West Indies Corresponding author: Jerzy Walocha, MD, PhD Department of Anatomy, Jagiellonian University Medical College ul. Kopernika 12, 31-034 Kraków, Poland Phone: +48 12 422 95 11; E-mail: [email protected] Abstract: Authors paid attention to anatomy and clinical implications which are associated with the variations of the sphenoid sinus. We discuss also anatomical structure of the sphenoid bone implementing clinical application of this bone to diff erent invasive and miniinvasive procedures (i.e. FESS). Key words: sphenoid bone, sphenoid sinus, anatomy, computer tomography, FESS. Introduction Sphenoid sinuses are pneumatic spaces lined with mucosa, located in the body of the sphenoid bone. Th eir morphology is highly variable. Th eir variability concerns: 46 Joanna Jaworek-Troć, Michał Zarzecki, et al. • Size • Shape • Number of septa • Level of pneumatization Th ere is a lack of unequivocal pattern of the sinuses, which could have been supposed as anatomically normal. Sphenoid sinuses neighbor through their walls with important anatomical structures, both nervous and vascular — this neighbourhood and anatomical composition of the sphenoid sinuses are extremely important for the surgery in these regions. -
Macewen'striangle
European Journal of Molecular & Clinical Medicine ISSN 2515-8260 Volume 07, Issue 5, 2020 MacEwen’sTriangle- A Review Dr. Bhaskaran Sathyapriya, Professor, Department of Anatomy, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Chennai Chandrakala B1, Govindarajan Sumathy2, Syed FazilHasan 3, Priyadharshini.M3, Srilakshmi.B 3,Bhaskaran Sathyapriya* 1. Senior Lecturer, Department of Anatomy, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Chennai. 2. Professor and Head, Department of Anatomy, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Chennai. 3. Graduate student, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research *Professor, Department of Anatomy, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Chennai. Abstract In the temporal bone, between the posterior wall of the external acoustic meatus and the posterior root of the zygomatic process is the area called the suprameatal triangle, suprameatal pit, mastoid fossa, foveolasuprameatica, or Mac Ewen's triangle, through which an instrument may be pushed into the mastoid antrum..In the adult, the antrum lies approximately 1.5 to 2 cm deep to the suprameatal triangle. This is an important landmark when performing a cortical mastoidectomy. The triangle lies deep to the cymba conchae.The sex determination of unknown human skulls can be evaluated by using the measurement of the area formed by the xerographic projection of 3craniometric points related to the mastoid process: the porion, asterion, and mastoidale points. Keywords: MacEwen's triangle,mastoidectomy,suprameatal spine,Mastoid antrum ,sex determination,zygomatic process,mastoid process. Introduction MacEwen's triangle is a very important surgical landmark for the mastoid antrum or the largest mastoid air cell.[9] It is also known as Suprameatal triangle or Mastoid fossa.[4] The suprameataltrigone plays a big role in the aspect of clinics. -
Atlas of the Facial Nerve and Related Structures
Rhoton Yoshioka Atlas of the Facial Nerve Unique Atlas Opens Window and Related Structures Into Facial Nerve Anatomy… Atlas of the Facial Nerve and Related Structures and Related Nerve Facial of the Atlas “His meticulous methods of anatomical dissection and microsurgical techniques helped transform the primitive specialty of neurosurgery into the magnificent surgical discipline that it is today.”— Nobutaka Yoshioka American Association of Neurological Surgeons. Albert L. Rhoton, Jr. Nobutaka Yoshioka, MD, PhD and Albert L. Rhoton, Jr., MD have created an anatomical atlas of astounding precision. An unparalleled teaching tool, this atlas opens a unique window into the anatomical intricacies of complex facial nerves and related structures. An internationally renowned author, educator, brain anatomist, and neurosurgeon, Dr. Rhoton is regarded by colleagues as one of the fathers of modern microscopic neurosurgery. Dr. Yoshioka, an esteemed craniofacial reconstructive surgeon in Japan, mastered this precise dissection technique while undertaking a fellowship at Dr. Rhoton’s microanatomy lab, writing in the preface that within such precision images lies potential for surgical innovation. Special Features • Exquisite color photographs, prepared from carefully dissected latex injected cadavers, reveal anatomy layer by layer with remarkable detail and clarity • An added highlight, 3-D versions of these extraordinary images, are available online in the Thieme MediaCenter • Major sections include intracranial region and skull, upper facial and midfacial region, and lower facial and posterolateral neck region Organized by region, each layered dissection elucidates specific nerves and structures with pinpoint accuracy, providing the clinician with in-depth anatomical insights. Precise clinical explanations accompany each photograph. In tandem, the images and text provide an excellent foundation for understanding the nerves and structures impacted by neurosurgical-related pathologies as well as other conditions and injuries. -
Dissection and Exposure of the Whole Course of Deep Nerves in Human Head Specimens After Decalcification
Hindawi Publishing Corporation International Journal of Otolaryngology Volume 2012, Article ID 418650, 7 pages doi:10.1155/2012/418650 Research Article Dissection and Exposure of the Whole Course of Deep Nerves in Human Head Specimens after Decalcification Longping Liu, Robin Arnold, and Marcus Robinson Discipline of Anatomy and Histology, University of Sydney, Anderson Stuart Building F13, Sydney, NSW 2006, Australia Correspondence should be addressed to Marcus Robinson, [email protected] Received 29 July 2011; Revised 10 November 2011; Accepted 12 December 2011 AcademicEditor:R.L.Doty Copyright © 2012 Longping Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The whole course of the chorda tympani nerve, nerve of pterygoid canal, and facial nerves and their relationships with surrounding structures are complex. After reviewing the literature, it was found that details of the whole course of these deep nerves are rarely reported and specimens displaying these nerves are rarely seen in the dissecting room, anatomical museum, or atlases. Dissections were performed on 16 decalcified human head specimens, exposing the chorda tympani and the nerve connection between the geniculate and pterygopalatine ganglia. Measurements of nerve lengths, branching distances, and ganglia size were taken. The chorda tympani is a very fine nerve (0.44 mm in diameter within the tympanic cavity) and approximately 54 mm in length. The mean length of the facial nerve from opening of internal acoustic meatus to stylomastoid foramen was 52.5 mm. -
Traumatic Dislocation of the Mandibular Condyle Into the Middle Cranial Fossa Treated with Immediate Reconstruction: a Case Report Joseph E
CILLO, SINN, AND ELLIS 859 grafting in a patient with AIDS, acute myocardial infarction, fection and acquired immunodeficiency syndrome. Am J Surg and severe left main coronary artery disease. J Cardiovasc Surg 180:228, 2000 44:55, 2003 18. James J, Hofland HW, Borgstein ES, et al: The prevalence of HIV 15. van Marle J, Tudhope L, Weir G, et al: Vascular disease in infection among burn patients in a burns unit in Malawi and its HIV/AIDS patients. S Afr Med J 92:974, 2002 influence on outcome. Burns 29:55, 2003 16. Chambers AJ, Lord RS: Incidence of acquired immune defi- 19. Patton LL, Shugars DA, Bonito AJ: A systematic review of ciency syndrome (AIDS)-related disorders at laparatomy in pa- complication risks for HIV-positive patients undergoing inva- tients with AIDS. Br J Surg 88:294, 2001 sive dental procedures. J Am Dent Assoc 133:195, 2002 17. Tran HS, Moncure M, Tarnoff M, et al: Predictors of operative 20. Diz Dios P, Fernandez Feijoo J, Vazquez Garcia E: Tooth ex- outcome in patients with human immunodeficiency virus in- traction in HIV sero-positive patients. Int Dent J 49:317, 1999 J Oral Maxillofac Surg 63:859-865, 2005 Traumatic Dislocation of the Mandibular Condyle into the Middle Cranial Fossa Treated With Immediate Reconstruction: A Case Report Joseph E. Cillo, Jr, DMD,* Douglas P. Sinn, DDS,† and Edward Ellis III, DDS, MS‡ While fractures of the mandible condylar process are his chief complaints were right-sided jaw pain, limited common, accounting for 29% to 40% of mandibular mouth opening, and malocclusion with an anterior open trauma,1 dislocation of the mandibular condyle through bite.