Chapterchapter 2 HIGHH RESOLUTION MAGNETIC
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Branches of the Maxillary Artery of the Dromedary, Camelus Dromedarius
Table 3.5: Branches of the Maxillary Artery of the Dromedary, Camelus dromedarius Artery Origin Course Distribution Departs from common trunk with the deep temporal vessels, close to mandibular foramen; traverses mandibular canal, supplying Mandibular dentition; lower lip; Inferior Alveolar Maxillary Artery mandibular dentition. Terminates as mental anastomoses freely with ventral ramus artery after exiting at mental foramen, of the facial artery. whereupon supplies skin, mucosa, and muscle of the lower lip. Single deep temporal vessel is first major dorsal branch of the MA; ascends deep to the coronoid Deep Temporal Maxillary Artery Temporalis muscle process and fans out on the deep surface of the temporalis muscle. Lower lateral branch of deep temporal artery; passes through the mandibular incisure and Masseteric Deep Temporal Artery Masseter muscle curves rostrally to pierce the internal surface of the masseter muscle. Proximal to the foramen orbitorotundum and optic foramen, numerous rami anastomotica connect the maxillary artery to the carotid rete. Carotid rete, ophthalmic rete, external Ramus anastomoticus Maxillary Artery The network in the dromedary is extensive, ophthalmic artery; intracranial cavity forming a plexus between the carotid and ophthalmic retia, and giving rise to the external ophthalmic artery. Condenses from a dense retial mat (composed of maxillary rami, the extradural/extracranial portion of the carotid rete, and the ophthalmic Extraocular muscles, periorbita, External Ophthalmic MA/CR/OR rete). Perfuses the majority of the periorbita, lacrimal gland including branches to the extraocular muscles and the lacrimal gland Lateral branch of the MA, begins opposite the rami anastomotica; traverses parenchyma orbital Supplies the buccal fat pad, Buccal MA fossa, between malar and anterior border of buccinator; contributes ventral coronoid process. -
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. -
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. -
Vessels and Circulation
CARDIOVASCULAR SYSTEM OUTLINE 23.1 Anatomy of Blood Vessels 684 23.1a Blood Vessel Tunics 684 23.1b Arteries 685 23.1c Capillaries 688 23 23.1d Veins 689 23.2 Blood Pressure 691 23.3 Systemic Circulation 692 Vessels and 23.3a General Arterial Flow Out of the Heart 693 23.3b General Venous Return to the Heart 693 23.3c Blood Flow Through the Head and Neck 693 23.3d Blood Flow Through the Thoracic and Abdominal Walls 697 23.3e Blood Flow Through the Thoracic Organs 700 Circulation 23.3f Blood Flow Through the Gastrointestinal Tract 701 23.3g Blood Flow Through the Posterior Abdominal Organs, Pelvis, and Perineum 705 23.3h Blood Flow Through the Upper Limb 705 23.3i Blood Flow Through the Lower Limb 709 23.4 Pulmonary Circulation 712 23.5 Review of Heart, Systemic, and Pulmonary Circulation 714 23.6 Aging and the Cardiovascular System 715 23.7 Blood Vessel Development 716 23.7a Artery Development 716 23.7b Vein Development 717 23.7c Comparison of Fetal and Postnatal Circulation 718 MODULE 9: CARDIOVASCULAR SYSTEM mck78097_ch23_683-723.indd 683 2/14/11 4:31 PM 684 Chapter Twenty-Three Vessels and Circulation lood vessels are analogous to highways—they are an efficient larger as they merge and come closer to the heart. The site where B mode of transport for oxygen, carbon dioxide, nutrients, hor- two or more arteries (or two or more veins) converge to supply the mones, and waste products to and from body tissues. The heart is same body region is called an anastomosis (ă-nas ′tō -mō′ sis; pl., the mechanical pump that propels the blood through the vessels. -
Vascular Supply to the Head and Neck
Vascular supply to the head and neck Sumamry This lesson covers the head and neck vascular supply. ReviseDental would like to thank @KIKISDENTALSERVICE for the wonderful drawings in this lesson. Arterial supply to the head Facial artery: Origin: External carotid Branches: submental a. superior and inferior labial a. lateral nasal a. angular a. Note: passes superiorly over the body of there mandible at the masseter Superficial temporal artery: Origin: External carotid Branches: It is a continuation of the ex carotid a. Note: terminal branch of the ex carotid a. and is in close relation to the auricular temporal nerve Transverse facial artery: Origin: Superficial temporal a. Note: exits the parotid gland Maxillary branch: supplies the areas missed from the above vasculature Origin: External carotid a. Branches: (to the face) infraorbital, buccal and inferior alveolar a.- mental a. Note: Terminal branch of the ex carotid a. The ophthalmic branches Origin: Internal carotid a. Branches: Supratrochlear, supraorbital, lacrimal, anterior ethmoid, dorsal nasal Note:ReviseDental.com enters orbit via the optic foramen Note: The face arterial supply anastomose freely. ReviseDental.com ReviseDental.com Venous drainage of the head Note: follow a similar pathway to the arteries Superficial vessels can communicate with deep structures e.g. cavernous sinus and the pterygoid plexus. (note: relevant for spread of infection) Head venous vessels don't have valves Supratrochlear vein Origin: forehead and communicates with the superficial temporal v. Connects: joins with supra-orbital v. Note: from the angular vein Supra-orbital vein Origin: forehead and communicates with the superficial temporal v. Connects: joins with supratrochlear v. -
Anatomy of the Periorbital Region Review Article Anatomia Da Região Periorbital
RevSurgicalV5N3Inglês_RevistaSurgical&CosmeticDermatol 21/01/14 17:54 Página 245 245 Anatomy of the periorbital region Review article Anatomia da região periorbital Authors: Eliandre Costa Palermo1 ABSTRACT A careful study of the anatomy of the orbit is very important for dermatologists, even for those who do not perform major surgical procedures. This is due to the high complexity of the structures involved in the dermatological procedures performed in this region. A 1 Dermatologist Physician, Lato sensu post- detailed knowledge of facial anatomy is what differentiates a qualified professional— graduate diploma in Dermatologic Surgery from the Faculdade de Medician whether in performing minimally invasive procedures (such as botulinum toxin and der- do ABC - Santo André (SP), Brazil mal fillings) or in conducting excisions of skin lesions—thereby avoiding complications and ensuring the best results, both aesthetically and correctively. The present review article focuses on the anatomy of the orbit and palpebral region and on the important structures related to the execution of dermatological procedures. Keywords: eyelids; anatomy; skin. RESU MO Um estudo cuidadoso da anatomia da órbita é muito importante para os dermatologistas, mesmo para os que não realizam grandes procedimentos cirúrgicos, devido à elevada complexidade de estruturas envolvidas nos procedimentos dermatológicos realizados nesta região. O conhecimento detalhado da anatomia facial é o que diferencia o profissional qualificado, seja na realização de procedimentos mini- mamente invasivos, como toxina botulínica e preenchimentos, seja nas exéreses de lesões dermatoló- Correspondence: Dr. Eliandre Costa Palermo gicas, evitando complicações e assegurando os melhores resultados, tanto estéticos quanto corretivos. Av. São Gualter, 615 Trataremos neste artigo da revisão da anatomia da região órbito-palpebral e das estruturas importan- Cep: 05455 000 Alto de Pinheiros—São tes correlacionadas à realização dos procedimentos dermatológicos. -
Clinical Anatomy of the Maxillary Artery
Okajimas CnlinicalFolia Anat. Anatomy Jpn., 87 of(4): the 155–164, Maxillary February, Artery 2011155 Clinical Anatomy of the Maxillary Artery By Ippei OTAKE1, Ikuo KAGEYAMA2 and Izumi MATAGA3 1 Department of Oral and Maxilofacial Surgery, Osaka General Medical Center (Chief: ISHIHARA Osamu) 2 Department of Anatomy I, School of Life Dentistry at Niigata, Nippon Dental University (Chief: Prof. KAGEYAMA Ikuo) 3 Department of Oral and Maxillofacial Surgery, School of Life Dentistry at Niigata, Nippon Dental University (Chief: Prof. MATAGA Izumi) –Received for Publication, August 26, 2010– Key Words: Maxillary artery, running pattern of maxillary artery, intraarterial chemotherapy, inner diameter of vessels Summary: The Maxillary artery is a component of the terminal branch of external carotid artery and distributes the blood flow to upper and lower jawbones and to the deep facial portions. It is thus considered to be a blood vessel which supports both hard and soft tissues in the maxillofacial region. The maxillary artery is important for bleeding control during operation or superselective intra-arterial chemotherapy for head and neck cancers. The diagnosis and treatment for diseases appearing in the maxillary artery-dominating region are routinely performed based on image findings such as CT, MRI and angiography. However, validations of anatomical knowledge regarding the Maxillary artery to be used as a basis of image diagnosis are not yet adequate. In the present study, therefore, the running pattern of maxillary artery as well as the type of each branching pattern was observed by using 28 sides from 15 Japanese cadavers. In addition, we also took measurements of the distance between the bifurcation and the origin of the maxillary artery and the inner diameter of vessels. -
Branches of the External Carotid Artery of the Dromedary, Camelus Dromedarius Artery Origin Course Distribution
Table 3.4: Branches of the External Carotid Artery of the Dromedary, Camelus dromedarius Artery Origin Course Distribution Originates at the bifurcatio of the occipital artery from the common carotid artery. Superficial Occipital region, lateral face, pharynx, Common Carotid External Carotid course is throughout occipital and posteroinferior tongue, hyoid musculature, and Artery facial regions; deeper course is throughout sublingual glands. pharyngeal, lingual, and hyoid regions. The proper occipital artery is the first dorsal branch of the ECA. It arises near the caudal border of the wing of the atlas, traverses the atlantal fossa, and then splits into: 1. Multitude External Carotid of muscular branches; 2. Anastomosis with Collateral circulation with vertebral Occipital Artery vertebral artery (through alar foramen); 3. arteries; neck and occipital muscles Superior termination continues to course toward the external occipital protuberance, supplying the parenchyma of the occipital region inferior to and surrounding the foramen magnum. Variable origin: from the ECA or the "ascending pharyngeal." Condylar and ascending pharyngeal External Carotid may share a short common trunk. An anterior Artery (var: branch of the condylar artery follows the Inferior meninges and inferolateral Condylar Ascending hypoglossal nerve into the hypoglossal canal to occipital region. Pharyngeal) supply the inferior meninges. A posterior branch of the condylar provides collateral circulation to the occipital region. External Carotid Small, tortuous division from medial wall of Cranial Thyroid Thyroid Artery ECA From posteromedial surface of ECA Descending External Carotid immediately posterior to the jugular process. Extensive distribution throughout the Pharyngeal Artery Convoluted and highly dendritic throughout the pharynx lateral and posterior wall of the pharynx. -
Removal of Periocular Veins by Sclerotherapy
Removal of Periocular Veins by Sclerotherapy David Green, MD Purpose: Prominent periocular veins, especially of the lower eyelid, are not uncommon and patients often seek their removal. Sclerotherapy is a procedure that has been successfully used to permanently remove varicose and telangiectatic veins of the lower extremity and less frequently at other sites. Although it has been successfully used to remove dilated facial veins, it is seldom performed and often not recommended in the periocular region for fear of complications occurring in adjacent structures. The purpose of this study was to determine whether sclerotherapy could safely and effectively eradicate prominent periocular veins. Design: Noncomparative case series. Participants: Fifty adult female patients with prominent periocular veins in the lower eyelid were treated unilaterally. Patients and Methods: Sclerotherapy was performed with a 0.75% solution of sodium tetradecyl sulfate. All patients were followed for at least 12 months after treatment. Main Outcome Measures: Complete clinical disappearance of the treated vein was the criterion for success. Results: All 50 patients were successfully treated with uneventful resorption of their ectatic periocular veins. No patient required a second treatment and there was no evidence of treatment failure at 12 months. No new veins developed at the treated sites and no patient experienced any ophthalmologic or neurologic side effects or complications. Conclusions: Sclerotherapy appears to be a safe and effective means of permanently eradicating periocular veins. Ophthalmology 2001;108:442–448 © 2001 by the American Academy of Ophthalmology. Removal of asymptomatic facial veins, especially periocu- Patients and Materials lar veins, for cosmetic enhancement is a frequent request. -
The Superior Ophthalmic Vein Approach for the Treatment of Carotid-Cavernous Fistulas: a Novel Technique Using Onyx
Neurosurg Focus 32 (5):E13, 2012 The superior ophthalmic vein approach for the treatment of carotid-cavernous fistulas: a novel technique using Onyx NOHRA CHALOUHI, M.D.,1 AARON S. DUMONT, M.D.,1 STAVROPOULA TJOUMAKARIS, M.D.,1 L. FERNAndO GONZALEZ, M.D.,1 JURIJ R. BILYK, M.D.,2 CIRO RAndAZZO, M.D.,1 DAVID HASAN, M.D.,3 RICHARD T. DALYAI, M.D.,1 ROBERT ROSENWAssER, M.D.,1 And PASCAL JAbbOUR, M.D.1 1Department of Neurosurgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience; 2Oculoplastic and Orbital Surgery Service, Wills Eye Institute, Philadelphia, Pennsylvania; and 3Department of Neurosurgery, University of Iowa, Iowa City, Iowa Object. Endovascular therapy is the primary treatment option for carotid-cavernous fistulas (CCFs). Operative cannulation of the superior ophthalmic vein (SOV) provides a reasonable alternative route to the cavernous sinus when all transvenous and transarterial approaches have been unsuccessful. The role of the liquid embolic agent Onyx in the management of CCFs has not been well documented, especially when using an SOV approach. The purpose of this study is to assess the safety and efficacy of Onyx embolization of CCFs through a surgical cannulation of the SOV. Methods. The authors retrospectively reviewed all patients with CCFs who were treated with Onyx through an SOV approach between April 2009 and April 2011. Traditional endovascular approaches had failed in all patients. Results. A total of 10 patients were identified, 1 with a Type A CCF, 5 with a Type B CCF, and 4 with a Type D CCF. All fistulas were embolized in 1 session. -
Asymmetric Superior Ophthalmic Vein Thrombosis Due to Sepsis Induced
perim Ex en l & ta a l ic O p in l h t C h f Journal of Clinical & Experimental a o l m l a o n l r o Kim and Kang, J Clin Exp Ophthalmol 2015, 6:4 g u y o J Ophthalmology 10.4172/2155-9570.1000454 ISSN: 2155-9570 DOI: Case Report Open Access Asymmetric Superior Ophthalmic Vein Thrombosis due to Sepsis Induced by a Deep Neck Infection Jungyong Kim* and Sungmo Kang Department of Ophthalmology, Inha university hospital, Incheon, South Korea *Corresponding author: Sungmo Kang, Department of Ophthalmology, Inha university hospital, Incheon, South Korea, Tel: 821084958369; E-mail: [email protected] Received date: Jun 09, 2015, Accepted date: July 28, 2015, Published date: Aug 01, 2015 Copyright: © 2014 Kim et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract Superior ophthalmic vein thrombosis is one of the early signs of cavernous sinus thrombosis. It is characterized by ipsilateral proptosis, ptosis, chemosis, limitations of ocular muscle movement and normal fundus findings. In this article, we present a case of bilateral asymmetric superior ophthalmic vein thrombosis due to sepsis developed from a deep neck infection from a parotid gland abscess. A 49-year-old male patient presented to our emergency department with a history of progressive left neck swelling, ocular pain and conjunctival injection, ptosis, proptosis, and diplopia on his right eye. He had limitations of his extraocular muscle movement in all directions of his right eye, especially abduction and adduction limitations with no midline crossing. -
The 2017 Doyne Lecture: the Orbit As a Window to Systemic Disease
Eye (2018) 32, 248–261 © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved 0950-222X/18 www.nature.com/eye REVIEW The 2017 Doyne AA McNab Lecture: the orbit as a window to systemic disease Abstract A very large number of disorders affect the associations. I will not cover these in orbit, and many of these occur in the setting of encyclopaedic detail, but will instead focus on systemic disease. This lecture covers selected aspects of orbital disease with systemic aspects of orbital diseases with systemic asso- associations that have been of particular clinical ciations in which the author has a particular and research interest to me. clinical or research interest. Spontaneous orbital haemorrhage often occurs in the presence of Orbital vascular disease bleeding diatheses. Thrombosis of orbital veins and ischaemic necrosis of orbital and ocular Two generations ago, Duke-Elder’s multi- adnexal tissues occur with thrombophilic dis- volume textbook was on every orders, vasculitis, and certain bacterial and ophthalmologist’s bookshelf. Volume 13, part 2 fungal infections. Non-infectious orbital inflam- of this seminal work has a section on mation commonly occurs with specificinflam- spontaneous orbital haemorrhage.1 Under ’ matory diseases, including Graves disease, haemorrhagic diatheses, it states ‘the most ’ IgG4-related disease, sarcoidosis, Sjögren ssyn- important are haemophilia and scurvy’. I doubt drome and granulomatosis with polyangiitis, all any of you see cases of either disease now. But of which have systemic manifestations. IgG4- scurvy is an incredibly important disease, which related ophthalmic disease is commoner than all profoundly influenced world history. More ’ these except Graves orbitopathy.