Terminologia Anatomica and Its Practical Usage: Pitfalls and How to Avoid Them P.P
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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. -
Anatomical Variants of the Emissary Veins: Unilateral Aplasia of Both the Sigmoid Sinus and the Internal Jugular Vein and Development of the Petrosquamosal Sinus
Folia Morphol. Vol. 70, No. 4, pp. 305–308 Copyright © 2011 Via Medica C A S E R E P O R T ISSN 0015–5659 www.fm.viamedica.pl Anatomical variants of the emissary veins: unilateral aplasia of both the sigmoid sinus and the internal jugular vein and development of the petrosquamosal sinus. A rare case report O. Kiritsi1, G. Noussios2, K. Tsitas3, P. Chouridis4, D. Lappas5, K. Natsis6 1“Hippokrates” Diagnostic Centre of Kozani, Greece 2Laboratory of Anatomy in Department of Physical Education and Sports Medicine at Serres, “Aristotle” University of Thessaloniki, Greece 3Orthopaedic Department of General Hospital of Kozani, Greece 4Department of Otorhinolaryngology of “Hippokration” General Hospital of Thessaloniki, Greece 5Department of Anatomy of Medical School of “National and Kapodistrian” University of Athens, Greece 6Department of Anatomy of the Medical School of “Aristotle” University of Thessaloniki, Greece [Received 9 August 2011; Accepted 25 September 2011] We report a case of hypoplasia of the right transverse sinus and aplasia of the ipsilateral sigmoid sinus and the internal jugular vein. In addition, development of the petrosquamosal sinus and the presence of a large middle meningeal sinus and sinus communicans were observed. A 53-year-old Caucasian woman was referred for magnetic resonance imaging (MRI) investigation due to chronic head- ache. On the MRI scan a solitary meningioma was observed. Finally MR 2D veno- graphy revealed this extremely rare variant. (Folia Morphol 2011; 70, 4: 305–308) Key words: hypoplasia, right transverse sinus, aplasia, ipsilateral sigmoid sinus, petrosquamosal sinus, internal jugular vein INTRODUCTION CASE REPORT Emissary veins participate in the extracranial A 53-year-old Caucasian woman was referred for venous drainage of the dural sinuses of the poste- magnetic resonance imaging (MRI) investigation due to rior fossa, complementary to the internal jugular chronic frontal headache complaints. -
CHAPTER 8 Face, Scalp, Skull, Cranial Cavity, and Orbit
228 CHAPTER 8 Face, Scalp, Skull, Cranial Cavity, and Orbit MUSCLES OF FACIAL EXPRESSION Dural Venous Sinuses Not in the Subendocranial Occipitofrontalis Space More About the Epicranial Aponeurosis and the Cerebral Veins Subcutaneous Layer of the Scalp Emissary Veins Orbicularis Oculi CLINICAL SIGNIFICANCE OF EMISSARY VEINS Zygomaticus Major CAVERNOUS SINUS THROMBOSIS Orbicularis Oris Cranial Arachnoid and Pia Mentalis Vertebral Artery Within the Cranial Cavity Buccinator Internal Carotid Artery Within the Cranial Cavity Platysma Circle of Willis The Absence of Veins Accompanying the PAROTID GLAND Intracranial Parts of the Vertebral and Internal Carotid Arteries FACIAL ARTERY THE INTRACRANIAL PORTION OF THE TRANSVERSE FACIAL ARTERY TRIGEMINAL NERVE ( C.N. V) AND FACIAL VEIN MECKEL’S CAVE (CAVUM TRIGEMINALE) FACIAL NERVE ORBITAL CAVITY AND EYE EYELIDS Bony Orbit Conjunctival Sac Extraocular Fat and Fascia Eyelashes Anulus Tendineus and Compartmentalization of The Fibrous "Skeleton" of an Eyelid -- Composed the Superior Orbital Fissure of a Tarsus and an Orbital Septum Periorbita THE SKULL Muscles of the Oculomotor, Trochlear, and Development of the Neurocranium Abducens Somitomeres Cartilaginous Portion of the Neurocranium--the The Lateral, Superior, Inferior, and Medial Recti Cranial Base of the Eye Membranous Portion of the Neurocranium--Sides Superior Oblique and Top of the Braincase Levator Palpebrae Superioris SUTURAL FUSION, BOTH NORMAL AND OTHERWISE Inferior Oblique Development of the Face Actions and Functions of Extraocular Muscles Growth of Two Special Skull Structures--the Levator Palpebrae Superioris Mastoid Process and the Tympanic Bone Movements of the Eyeball Functions of the Recti and Obliques TEETH Ophthalmic Artery Ophthalmic Veins CRANIAL CAVITY Oculomotor Nerve – C.N. III Posterior Cranial Fossa CLINICAL CONSIDERATIONS Middle Cranial Fossa Trochlear Nerve – C.N. -
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. -
The Terminologia Anatomica Matters: Examples from Didactic, Scientific, and Clinical Practice B
Folia Morphol. Vol. 76, No. 3, pp. 340–347 DOI: 10.5603/FM.a2016.0078 R E V I E W A R T I C L E Copyright © 2017 Via Medica ISSN 0015–5659 www.fm.viamedica.pl The Terminologia Anatomica matters: examples from didactic, scientific, and clinical practice B. Strzelec1, 2, P.P. Chmielewski1, B. Gworys1 1Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland 2Department and Clinic of Gastrointestinal and General Surgery, Wroclaw Medical University, Wroclaw, Poland [Received: 19 August 2016; Accepted: 20 October 2016] The proper usage of the anatomical terminology is of paramount importance to all medical professionals. Although a multitude of studies have been devoted to issues associated with the use and application of the recent version of the anatomical terminology in both theoretical medicine and clinical practice, there are still many unresolved problems such as confusing terms, inconsistencies, and errors, including grammar and spelling mistakes. The aim of this article is to describe the current situation of the anatomical terminology and its usage in practice, as well as explain why it is so important to use precise, appropriate, and valid anatomical terms during the everyday communication among physicians from all medical branches. In this review, we discuss some confusing, obsolete, and erroneous terms that are still commonly used by many clinicians, and surgeons in particular, during the process of diagnosis and treatment. The use of these ambiguous, erroneous, and obsolete terms enhances the risk of miscommunication. We also provide some edifying examples from everyday clinical practice. -
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Folia Morphol. Vol. 79, No. 1, pp. 1–14 DOI: 10.5603/FM.a2019.0047 R E V I E W A R T I C L E Copyright © 2020 Via Medica ISSN 0015–5659 journals.viamedica.pl Should Terminologia Anatomica be revised and extended? A critical literature review P.P. Chmielewski1, B. Strzelec2, 3 1Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland 2Department and Clinic of Vascular, General and Transplantation Surgery, Jan Mikulicz-Radecki Medical University Hospital, Wroclaw Medical University, Wroclaw, Poland 3Department and Clinic of Gastrointestinal and General Surgery, Wroclaw Medical University, Wroclaw, Poland [Received: 14 November 2018; Accepted: 31 December 2018] The first edition of the Terminologia Anatomica was published in 1998 by the Federative Committee for Anatomical Terminology, whereas the second edition was issued in 2011 by the Federative International Programme for Anatomical Terminologies. Since then many attempts have been made to revise and extend the official terminology as several inconsistencies have been noted. Moreover, numerous crucial terms were either omitted or deliberately excluded from the official terminology, like sulcus popliteus and diaphragma urogenitale, respec- tively. Furthermore, several synonyms are to be discarded. Notwithstanding the criticism, the use of the current version of terminology is strongly recommended. Although the Terminologia Anatomica is open to future expansion and revision, every change should be made after a thorough discussion of the historical context and scientific legitimacy of a given term. The anatomical nomenclature must be as simple as possible but also precise and coherent. It is generally accepted that hasty innovation ought not to be endorsed. -
Dural Venous Channels: Hidden in Plain Sight–Reassessment of an Under-Recognized Entity
Published July 16, 2020 as 10.3174/ajnr.A6647 ORIGINAL RESEARCH INTERVENTIONAL Dural Venous Channels: Hidden in Plain Sight–Reassessment of an Under-Recognized Entity M. Shapiro, K. Srivatanakul, E. Raz, M. Litao, E. Nossek, and P.K. Nelson ABSTRACT BACKGROUND AND PURPOSE: Tentorial sinus venous channels within the tentorium cerebelli connecting various cerebellar and su- pratentorial veins, as well as the basal vein, to adjacent venous sinuses are a well-recognized entity. Also well-known are “dural lakes” at the vertex. However, the presence of similar channels in the supratentorial dura, serving as recipients of the Labbe, super- ficial temporal, and lateral and medial parieto-occipital veins, among others, appears to be underappreciated. Also under-recog- nized is the possible role of these channels in the angioarchitecture of certain high-grade dural fistulas. MATERIALS AND METHODS: A retrospective review of 100 consecutive angiographic studies was performed following identification of index cases to gather data on the angiographic and cross-sectional appearance, location, length, and other features. A review of 100 consecutive dural fistulas was also performed to identify those not directly involving a venous sinus. RESULTS: Supratentorial dural venous channels were found in 26% of angiograms. They have the same appearance as those in the tentorium cerebelli, a flattened, ovalized morphology owing to their course between 2 layers of the dura, in contradistinction to a rounded cross-section of cortical and bridging veins. They are best appreciated on angiography and volumetric postcontrast T1- weighted images. Ten dural fistulas not directly involving a venous sinus were identified, 6 tentorium cerebelli and 4 supratentorial. -
Appendix-A-Osteology-V-2.0.Pdf
EXPLORATIONS: AN OPEN INVITATION TO BIOLOGICAL ANTHROPOLOGY Editors: Beth Shook, Katie Nelson, Kelsie Aguilera and Lara Braff American Anthropological Association Arlington, VA 2019 Explorations: An Open Invitation to Biological Anthropology is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted. ISBN – 978-1-931303-63-7 www.explorations.americananthro.org Appendix A. Osteology Jason M. Organ, Ph.D., Indiana University School of Medicine Jessica N. Byram, Ph.D., Indiana University School of Medicine Learning Objectives • Identify anatomical position and anatomical planes, and use directional terms to describe relative positions of bones • Describe the gross structure and microstructure of bone as it relates to bone function • Describe types of bone formation and remodeling, and identify (by name) all of the bones of the human skeleton • Distinguish major bony features of the human skeleton like muscle attachment sites and passages for nerves and/or arteries and veins • Identify the bony features relevant to estimating age, sex, and ancestry in forensic and bioarchaeological contexts • Compare human and chimpanzee skeletal anatomy Anthropology is the study of people, and the skeleton is the framework of the person. So while all subdisciplines of anthropology study human behavior (culture, language, etc.) either presently or in the past, biological anthropology is the only subdiscipline that studies the human body specifically. And the fundamental core of the human (or any vertebrate) body is the skeleton. Osteology, or the study of bones, is central to biological anthropology because a solid foundation in osteology makes it possible to understand all sorts of aspects of how people have lived and evolved. -
The Condylar Canal and Emissary Vein—A Comprehensive and Pictorial Review of Its Anatomy and Variation
Child's Nervous System (2019) 35:747–751 https://doi.org/10.1007/s00381-019-04120-4 REVIEW ARTICLE The condylar canal and emissary vein—a comprehensive and pictorial review of its anatomy and variation Stefan Lachkar1 & Shogo Kikuta1 & Joe Iwanaga1,2 & R. Shane Tubbs1,3 Received: 6 March 2019 /Accepted: 8 March 2019 /Published online: 21 March 2019 # Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract The condylar canal and its associated emissary vein serve as vital landmarks during surgical interventions involving skull base surgery. The condylar canal serves to function as a bridge of communication from the intracranial to extracranial space. Variations of the condylar canal are extremely prevalent and can present as either bilateral, unilateral, or completely absent. Anatomical variations of the condylar canal pose as a potential risk to surgeons and radiologist during diagnosis as it could be misinterpreted for a glomus jugular tumor and require surgical intervention when one is not needed. Few literature reviews have articulated the condylar canal and its associated emissary vein through extensive imaging. This present paper aims to further the knowledge of anatomical variations and surgical anatomy involving the condylar canal through high-quality computed tomography (CT) images with cadaveric and dry bone specimens that have been injected with latex to highlight emissary veins arising from the condylar canal. Keywords Posterior condylar canal . Anatomical variation . Anatomy . Cadaver . Skull . Emissary vein Introduction the posterior cranial fossa near or in the jugular fossa (Figs. 3 and 4)[2, 7, 9]. Its contents include the condylar emissary The condylar canal serves as a vital passageway for venous vein, which connects the sigmoid sinus or superior jugular circulation (condylar emissary vein) (Fig. -
Hemodynamic Features in Normal and Cavernous Sinus Dural ORIGINAL RESEARCH Arteriovenous Fistulas
Published September 6, 2012 as 10.3174/ajnr.A3252 Superior Petrosal Sinus: Hemodynamic Features in Normal and Cavernous Sinus Dural ORIGINAL RESEARCH Arteriovenous Fistulas R. Shimada BACKGROUND AND PURPOSE: Normal hemodynamic features of the superior petrosal sinus and their H. Kiyosue relationships to the SPS drainage from cavernous sinus dural arteriovenous fistulas are not well known. We investigated normal hemodynamic features of the SPS on cerebral angiography as well as the S. Tanoue frequency and types of the SPS drainage from CSDAVFs. H. Mori T. Abe MATERIALS AND METHODS: We evaluated 119 patients who underwent cerebral angiography by focusing on visualization and hemodynamic status of the SPS. We also reviewed selective angiography in 25 consecutive patients with CSDAVFs; we were especially interested in the presence of drainage routes through the SPS from CSDAVFs. RESULTS: In 119 patients (238 sides), the SPS was segmentally (anterior segment, 37 sides; posterior segment, 82 sides) or totally (116 sides) demonstrated. It was demonstrated on carotid angiography in 11 sides (4.6%), receiving blood from the basal vein of Rosenthal or sphenopetrosal sinus, and on vertebral angiography in 235 sides (98.7%), receiving blood from the petrosal vein. No SPSs were demonstrated with venous drainage from the cavernous sinus. SPS drainage was found in 7 of 25 patients (28%) with CSDAVFs. CSDAVFs drained through the anterior segment of SPS into the petrosal vein without draining to the posterior segment in 3 of 7 patients (12%). CONCLUSIONS: The SPS normally works as the drainage route receiving blood from the anterior cerebellar and brain stem venous systems. -
Sigmoid Sinus Diverticulum, Dehiscence, and Venous Sinus Stenosis: Potential Causes of Pulsatile Tinnitus in Patients with Idiopathic Intracranial Hypertension?
Published July 13, 2017 as 10.3174/ajnr.A5277 ORIGINAL RESEARCH HEAD & NECK Sigmoid Sinus Diverticulum, Dehiscence, and Venous Sinus Stenosis: Potential Causes of Pulsatile Tinnitus in Patients with Idiopathic Intracranial Hypertension? X J.A. Lansley, X W. Tucker, X M.R. Eriksen, X P. Riordan-Eva, and X S.E.J. Connor ABSTRACT BACKGROUND AND PURPOSE: Pulsatile tinnitus is experienced by most patients with idiopathic intracranial hypertension. The patho- physiology remains uncertain; however, transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence have been proposed as potential etiologies. We aimed to determine whether the prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/ dehiscence was increased in patients with idiopathic intracranial hypertension and pulsatile tinnitus relative to those without pulsatile tinnitus and a control group. MATERIALS AND METHODS: CT vascular studies of patients with idiopathic intracranial hypertension with pulsatile tinnitus (n ϭ 42), without pulsatile tinnitus (n ϭ 37), and controls (n ϭ 75) were independently reviewed for the presence of severe transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence according to published criteria. The prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence in patients with idiopathic intracranial hypertension with pulsatile tinnitus was compared with that in the nonpulsatile tinnitus idiopathic intracranial hypertension group and the control group. Further comparisons included differing degrees of transverse sinus stenosis (50% and 75%), laterality of transverse sinus stenosis/sigmoid sinus diverticulum/dehiscence, and ipsilateral transverse sinus stenosis combined with sigmoid sinus diverticulum/dehiscence. RESULTS: Severe bilateral transverse sinus stenoses were more frequent in patients with idiopathic intracranial hypertension than in controls (P Ͻ .001), but there was no significant association between transverse sinus stenosis and pulsatile tinnitus within the idiopathic intracranial hypertension group. -
Anatomical Considerations of the Endonasal Transsphenoidal
48 Artigo Original Anatomical Considerations of the Endonasal Transsphenoidal Approach Considerações anatômicas na abordagem transesfenoidal endonasal Alvaro Campero1,2 Abraham Campero2 Carolina Martins1 Alexandre Yasuda1 Albert Rhoton1 ABSTRACT RESÚMEN The sellar contents are separated from the sphenoidal sinus by Los contenidos de la silla turca se encuentran separados del a tiny sheath of bone that compris es the sellar floor, making seno esfenoidal por una delgada lámina de hueso que es el the transsphenoidal approach the most used surgical route to piso selar, haciendo que la vía transesfenoidal sea la ruta qui- intrasellar lesions. The transsphenoidal approach can be ini- rúrgica más utilizada para lesiones intraselares. El abordaje tiated in three different ways: 1) cutting the mucosa over the transesfenoidal puede ser iniciado de tres diferentes maneras: alveolar part of maxilla (sublabial transsphenoidal), 2) cut- 1) cortando la mucosa sobre la parte alveolar del maxilar su- ting along the anterior nasal mucosa adjacent to the columella perior (sublabial transesfenoidal), 2) cortando la mucosa na- (transeptal transsphenoidal), and 3) cutting the mucosa over sal anterior, adyacente a la columena (transseptal transesfe- the sphenoidal rostrum (endonasal transsphenoidal). Each noidal), y 3) cortando la mucosa sobre el rostro del esfenoides cavernous sinus has four dural walls. The lateral, superior (endonasal transesfenoidal). Cada seno cavernoso tiene 4 pa- and posterior walls are composed of endosteal and periosteal redes durales. Las paredes lateral, superior y posterior están dura leaflets. Unlike the other dural walls, the medial wall is compuestas por dos hojas (endosteal y perióstica), mientras formed of a single, thin dural sheath, an anatomical fact that que la pared medial posee una sola hoja dural, muy delgada, help explains the lateral expansion of a pituitary adenoma.