Questions on Human Anatomy
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The Muscular System Views
1 PRE-LAB EXERCISES Before coming to lab, get familiar with a few muscle groups we’ll be exploring during lab. Using Visible Body’s Human Anatomy Atlas, go to the Views section. Under Systems, scroll down to the Muscular System views. Select the view Expression and find the following muscles. When you select a muscle, note the book icon in the content box. Selecting this icon allows you to read the muscle’s definition. 1. Occipitofrontalis (epicranius) 2. Orbicularis oculi 3. Orbicularis oris 4. Nasalis 5. Zygomaticus major Return to Muscular System views, select the view Head Rotation and find the following muscles. 1. Sternocleidomastoid 2. Scalene group (anterior, middle, posterior) 2 IN-LAB EXERCISES Use the following modules to guide your exploration of the head and neck region of the muscular system. As you explore the modules, locate the muscles on any charts, models, or specimen available. Please note that these muscles act on the head and neck – those that are located in the neck but act on the back are in a separate section. When reviewing the action of a muscle, it will be helpful to think about where the muscle is located and where the insertion is. Muscle physiology requires that a muscle will “pull” instead of “push” during contraction, and the insertion is the part that will move. Imagine that the muscle is “pulling” on the bone or tissue it is attached to at the insertion. Access 3D views and animated muscle actions in Visible Body’s Human Anatomy Atlas, which will be especially helpful to visualize muscle actions. -
Axis Scientific Skull with Muscle Origins and Insertions A-108851
Axis Scientific Skull with Muscle Origins and Insertions A-108851 *Muscle Origins = RED Anterior View Occipital Bone Posterior View *Muscle Insertions = BLUE Posterior Cerebral Artery Frontal Bone Basilar Artery Pontine Arteries Parietal Bone Nasal Bone Temporal Bone Sphenoid Bone Temporalis Parietal Bone Occipitofrontalis Occipital Bone Lacrimal Bone Sternocleidomastoid Trapezius Temporalis Semispinalis Capitis Temporal Bone Corrugator Supercilii Splenius Capitis Longissimus Capitis Orbicularis Oculi Obliquus Capitis Superior Temporal Basilar Artery Bone Procerus Rectis Capitis C1 Posterior Major Vertebral Artery Levator Labii Superioris C2 Alaeque Nasi Rectis Capitis Posterior Minor Sphenoid Levator Labii Superioris Posterior Digastric Zygomatic Bone Bone C3 Nasalis (Transverse Part) Rectis Capitis C4 Masseter Lateralis Spinal Nerve Zygomaticus Major C5 Zygomatic Medial Pterygoid Bone Zygomaticus Minor C6 Temporalis Mylohyoid C7 Mandible Levator Anguli Oris Vomer Nasalis (Alar Part) Spinal Nerve Spinal Cord Maxilla Orbicularis Oris Depressor Septi Nasi Masseter Medial Superior Masseter Mandible Orbicularis Oris Constrictor Pterygoid Inferior View Styloglossus Platysma Mylohyoid Depressor Stylohyoid Anguli Oris Anterior Stylopharyngeus Spinal Nerve Depressor Digastric Labii Inferioris Posterior Geniohyoid Digastric Vertebral Artery Mentalis Rectis Capitis Genioglossus Lateralis Rectis Capitis Buccinator Mandible Posterior Major Rectis Capitis Posterior Minor Frontal Bone Corrugator Supercilii Orbicularis Oculi Lacrimal Bone Depressor -
CME Anatomy of Aging Face
Published online: 2020-01-15 Free full text on www.ijps.org CME Anatomy of aging face Rakesh Khazanchi, Aditya Aggarwal, Manoj Johar1 Department of Plastic and Cosmetic Surgery, Sir Ganga Ram Hospital, New Delhi - 110 060, 1Fortis Hospital, Noida, UP, India Address for correspondence: Dr. Rakesh Khazanchi, Department of Plastic and Cosmetic Surgery, Sir Ganga Ram Hospital, New Delhi - 110 060, India. E-mail: [email protected] ejuvenation of the face is evolving into a common deposition in regions of body called ‘depots’ procedure in India. This may be attempted by f) Fascial and ligament laxity Reither surgical or non surgical means. Surgical g) Shrinkage of glandular tissue (Salivary glands) rejuvenation of face includes a large variety of procedures h) Skeletal resorption to revert the changes of aging. In the past, face lift operation was done to simply lift the sagging skin rather Facial soft tissues are arranged in concentric layers. than shaping the face. However it often ended up in Skin is the outermost layer and then the basic building giving the patient an ‘operated on’ look producing tight blocks-fat, superficial fascia also known as superficial appearing face. The surgeons have now learnt that aging musculoaponeurotic system (SMAS), deep fascia and the process is a complex process that involves soft tissues as periosteum that covers the facial skeleton. Interspersed well as skeleton of face and is not just sagging of skin. in these layers are vessels, nerves, facial muscles and Therefore in order to get a good result after surgical retaining ligaments. Knowledge of these layers allows facial rejuvenation, it is paramount to understand these the surgeon to dissect in a given anatomic plane without anatomical structures and the effect of aging process on damaging important structures. -
EDS Awareness in the TMJ Patient
EDS Awareness in the TMJ Patient TMJ and CCI with the EDS Patient “The 50/50” Myofascial Pain Syndrome EDNF, Baltimore, MD August 14,15, 2015 Generation, Diagnosis and Treatment of Head Pain of Musculoskeletal Origin Head pain generated by: • Temporomandibular joint dysfunction • Cervicocranial Instability • Mandibular deviation • Deflection of the Pharyngeal Constrictor Structures Parameters & Observations . The Myofascial Pain Syndrome (MPS) is a description of pain tracking in 200 Ehlers-Danlos patients. Of the 200 patients, 195 were afflicted with this pain referral syndrome pattern. The MPS is in direct association and correlation to Temporomandibular Joint dysfunction and Cervico- Cranial Instability syndromes. Both syndromes are virtually and always correlated. Evaluation of this syndrome was completed after testing was done to rule out complex or life threatening conditions. The Temporomandibular Joint TMJ Dysfunction Symptoms: Deceptively Simple, with Complex Origins 1) Mouth opening, closing with deviation of mandibular condyles. -Menisci that maybe subluxated causing mandibular elevation. -Jaw locking “open” or “closed”. -Inability to “chew”. 2) “Headaches”/”Muscles spasms” (due to decreased vertical height)generated in the temporalis muscle, cheeks areas, under the angle of the jaw. 3) Osseous distortion Pain can be generated in the cheeks, floor of the orbits and/or sinuses due to osseous distortion associated with “bruxism”. TMJ dysfunction cont. (Any of the following motions may produce pain) Pain With: . Limited opening(closed lock): . Less than 33 mm of rotation in either or both joints . Translation- or lack of . Deviations – motion of the mandible to the affected side or none when both joints are affected . Over joint pain with or without motion around or . -
The Articulatory System Chapter 6 Speech Science/ COMD 6305 UTD/ Callier Center William F. Katz, Ph.D
The articulatory system Chapter 6 Speech Science/ COMD 6305 UTD/ Callier Center William F. Katz, Ph.D. STRUCTURE/FUNCTION VOCAL TRACT CLASSIFICATION OF CONSONANTS AND VOWELS MORE ON RESONANCE ACOUSTIC ANALYSIS/ SPECTROGRAMS SUPRSEGMENTALS, COARTICULATION 1 Midsagittal dissection From Kent, 1997 2 Oral Cavity 3 Oral Structures – continued • Moistened by saliva • Lined by mucosa • Saliva affected by meds 4 Tonsils • PALATINE* (laterally – seen in oral periph • LINGUAL (inf.- root of tongue) • ADENOIDS (sup.) [= pharyngeal] • Palatine, lingual tonsils are larger in children • *removed in tonsillectomy 5 Adenoid Facies • Enlargement from infection may cause problems (adenoid facies) • Can cause problems with nasal sounds or voicing • Adenoidectomy; also tonsillectomy (for palatine tonsils) 6 Adenoid faces (example) 7 Oral structures - frenulum Important component of oral periphery exam Lingual frenomy – for ankyloglossia “tongue-tie” Some doctors will snip for infants, but often will loosen by itself 8 Hard Palate Much variability in palate shape and height Very high vault 9 Teeth 10 Dentition - details Primary (deciduous, milk teeth) Secondary (permanent) n=20: n=32: ◦ 2 incisor ◦ 4 incisor ◦ 1 canine ◦ 2 canine ◦ 2 molar ◦ 4 premolar (bicuspid) Just for “fun” – baby ◦ 6 molar teeth pushing in! NOTE: x 2 for upper and lower 11 Types of malocclusion • Angle’s classification: • I, II, III • Also, individual teeth can be misaligned (e.g. labioversion) Also “Neutrocclusion/ distocclusion/mesiocclusion” 12 Dental Occlusion –continued Other terminology 13 Mandible Action • Primary movements are elevation and depression • Also…. protrusion/retraction • Lateral grinding motion 14 Muscles of Jaw Elevation Like alligators, we are much stronger at jaw elevation (closing to head) than depression 15 Jaw Muscles ELEVATORS DEPRESSORS •Temporalis ✓ •Mylohyoid ✓ •Masseter ✓ •Geniohyoid✓ •Internal (medial) Pterygoid ✓ •Anterior belly of the digastric (- Kent) •Masseter and IP part of “mandibular sling” •External (lateral) pterygoid(?)-- also protrudes and rocks side to side. -
Relation of Macular and Other Holes to the Insertion of the Inferior Oblique
Br J Ophthalmol: first published as 10.1136/bjo.47.2.90 on 1 February 1963. Downloaded from Brit. J. Ophthal. (1963) 47, 90. RELATION OF MACULAR AND OTHER HOLES TO THE INSERTION OF THE INFERIOR OBLIQUE* WITH A NOTE ON THE TOPOGRAPHY OF THE POSTERIOR SURFACE OF THE GLOBE BY ANWAR EL MASSRI Faculty ofMedicine, Ein-Shams University, Cairo THE macular region, like the peripheral retina, is liable to cystic degeneration, especially in high myopes and in old people. This gives a honeycomb appearance and on rupture of the cyst or cysts by slight or severe trauma a depression is produced which may be confined to the inner layers of the retina or form a macular hole. A hole may occur in a normal macula immediately after trauma or after an interval during which probably cystic degeneration has developed. A macular hole may also be formed in the process of retrac- tion of the vitreous if the macula is previously diseased or affected. These holes are always round or oval with a punched appearance. Multiple holes are rare. They may or may not be accompanied by retinal detachment. copyright. It seems that relationship exists between the formation of a macular hole and the contraction of the inferior oblique muscle (el Massri, 1958). In about five out of nine cases, the hole is accompanied by a peripheral tear or an area of degeneration at about 7 to 8 o'clock in the right eye or 4 to 5 o'clock in the left. At operation the peripheral tears were seen to be situated of the insertion of over the lateral end the inferior oblique. -
Tentorium Cerebelli: the Bridge Between the Central and Peripheral Nervous System, Part 2
Open Access Review Article DOI: 10.7759/cureus.5679 Tentorium Cerebelli: the Bridge Between the Central and Peripheral Nervous System, Part 2 Bruno Bordoni 1 , Marta Simonelli 2 , Maria Marcella Lagana 3 1. Cardiology, Foundation Don Carlo Gnocchi, Milan, ITA 2. Osteopathy, French-Italian School of Osteopathy, Pisa, ITA 3. Radiology, IRCCS Fondazione Don Carlo Gnocchi Onlus, Milan, ITA Corresponding author: Bruno Bordoni, [email protected] Abstract The tentorium cerebelli is a meningeal portion in relation to the skull, the nervous system, and the cervical tract. In this second part, the article discusses the systematic tentorial relationships, such as the central and cervical neurological connections, the venous circulation and highlights possible clinical alterations that could cause pain. To understand the function of anatomy, we should always remember that every area of the human body is never a segment, but a functional continuum. Categories: Physical Medicine & Rehabilitation, Anatomy, Osteopathic Medicine Keywords: tentorium cerebelli, fascia, pain, venous circulation, neurological connections, cranio Introduction And Background Cervical neurological connections The ansa cervicalis characterizes the first cervical roots and connects all anterior cervical nerve exits with the inferior floor of the oral cavity, the trigeminal system, the respiratory control system, and the sympathetic system. The descending branch of the hypoglossal nerve anastomoses with C1, forming the ansa hypoglossi or ansa cervicalis superior [1]. The inferior root of the ansa cervicalis, also known as descendens cervicalis, is formed by ascendant fibers from spinal nerves C2-C3 and occasionally fibers C4, lying anteriorly to the common carotid artery (it passes laterally or medially to the internal jugular vein upon anatomical variations) [1]. -
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 Myloglossus in a Human Cadaver Study: Common Or Uncommon Anatomical Structure? B
Folia Morphol. Vol. 76, No. 1, pp. 74–81 DOI: 10.5603/FM.a2016.0044 O R I G I N A L A R T I C L E Copyright © 2017 Via Medica ISSN 0015–5659 www.fm.viamedica.pl The myloglossus in a human cadaver study: common or uncommon anatomical structure? B. Buffoli*, M. Ferrari*, F. Belotti, D. Lancini, M.A. Cocchi, M. Labanca, M. Tschabitscher, R. Rezzani, L.F. Rodella Section of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy [Received: 1 June 2016; Accepted: 18 July 2016] Background: Additional extrinsic muscles of the tongue are reported in literature and one of them is the myloglossus muscle (MGM). Since MGM is nowadays considered as anatomical variant, the aim of this study is to clarify some open questions by evaluating and describing the myloglossal anatomy (including both MGM and its ligamentous counterpart) during human cadaver dissections. Materials and methods: Twenty-one regions (including masticator space, sublin- gual space and adjacent areas) were dissected and the presence and appearance of myloglossus were considered, together with its proximal and distal insertions, vascularisation and innervation. Results: The myloglossus was present in 61.9% of cases with muscular, ligamen- tous or mixed appearance and either bony or muscular insertion. Facial artery pro- vided myloglossal vascularisation in the 84.62% and lingual artery in the 15.38%; innervation was granted by the trigeminal system (buccal nerve and mylohyoid nerve), sometimes (46.15%) with hypoglossal component. Conclusions: These data suggest us to not consider myloglossus as a rare ana- tomical variant. -
MRI-Based Assessment of Masticatory Muscle Changes in TMD Patients After Whiplash Injury
Journal of Clinical Medicine Article MRI-Based Assessment of Masticatory Muscle Changes in TMD Patients after Whiplash Injury Yeon-Hee Lee 1,* , Kyung Mi Lee 2 and Q-Schick Auh 1 1 Department of Orofacial Pain and Oral Medicine, Kyung Hee University Dental Hospital, #613 Hoegi-dong, Dongdaemun-gu, Seoul 02447, Korea; [email protected] 2 Department of Radiology, Kyung Hee University College of Medicine, Kyung Hee University Hospital, #26 Kyunghee-daero, Dongdaemun-gu, Seoul 02447, Korea; [email protected] * Correspondence: [email protected]; Tel.: +82-2-958-9409; Fax: +82-2-968-0588 Abstract: Objective: to investigate the change in volume and signal in the masticatory muscles and temporomandibular joint (TMJ) of patients with temporomandibular disorder (TMD) after whiplash injury, based on magnetic resonance imaging (MRI), and to correlate them with other clinical parameters. Methods: ninety patients (64 women, 26 men; mean age: 39.36 ± 15.40 years), including 45 patients with symptoms of TMD after whiplash injury (wTMD), and 45 age- and sex- matched controls with TMD due to idiopathic causes (iTMD) were included. TMD was diagnosed using the study diagnostic criteria for TMD Axis I, and MRI findings of the TMJ and masticatory muscles were investigated. To evaluate the severity of TMD pain and muscle tenderness, we used a visual analog scale (VAS), palpation index (PI), and neck PI. Results: TMD indexes, including VAS, PI, and neck PI were significantly higher in the wTMD group. In the wTMD group, muscle tenderness was highest in the masseter muscle (71.1%), and muscle tenderness in the temporalis (60.0%), lateral pterygoid muscle (LPM) (22.2%), and medial pterygoid muscle (15.6%) was significantly more frequent than that in the iTMD group (all p < 0.05). -
Head & Neck Muscle Table
Robert Frysztak, PhD. Structure of the Human Body Loyola University Chicago Stritch School of Medicine HEAD‐NECK MUSCLE TABLE PROXIMAL ATTACHMENT DISTAL ATTACHMENT MUSCLE INNERVATION MAIN ACTIONS BLOOD SUPPLY MUSCLE GROUP (ORIGIN) (INSERTION) Anterior floor of orbit lateral to Oculomotor nerve (CN III), inferior Abducts, elevates, and laterally Inferior oblique Lateral sclera deep to lateral rectus Ophthalmic artery Extra‐ocular nasolacrimal canal division rotates eyeball Inferior aspect of eyeball, posterior to Oculomotor nerve (CN III), inferior Depresses, adducts, and laterally Inferior rectus Common tendinous ring Ophthalmic artery Extra‐ocular corneoscleral junction division rotates eyeball Lateral aspect of eyeball, posterior to Lateral rectus Common tendinous ring Abducent nerve (CN VI) Abducts eyeball Ophthalmic artery Extra‐ocular corneoscleral junction Medial aspect of eyeball, posterior to Oculomotor nerve (CN III), inferior Medial rectus Common tendinous ring Adducts eyeball Ophthalmic artery Extra‐ocular corneoscleral junction division Passes through trochlea, attaches to Body of sphenoid (above optic foramen), Abducts, depresses, and medially Superior oblique superior sclera between superior and Trochlear nerve (CN IV) Ophthalmic artery Extra‐ocular medial to origin of superior rectus rotates eyeball lateral recti Superior aspect of eyeball, posterior to Oculomotor nerve (CN III), superior Elevates, adducts, and medially Superior rectus Common tendinous ring Ophthalmic artery Extra‐ocular the corneoscleral junction division -
Tinnitus and Temporomandibular Joint Disorder Subtypes
TINNITUS AND TEMPOROMANDIBULAR JOINT DISORDER SUBTYPES SUSEE PRIYANKA RAVURI A thesis Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN DENTISTRY University of Washington 2017 Committee Edmond L. Truelove Peggy Lee Lloyd A. Mancl Program Authorized to Offer Degree: Oral Medicine 1 © Copyright 2017 Susee Priyanka Ravuri 2 University of Washington ABSTRACT Tinnitus And Temporomandibular Joint Disorder Subtypes Susee Priyanka Ravuri Edmond L. Truelove B.S., D.D.S., M.S.D. Oral Medicine OBJECTIVE: The purpose of this study was to assess the prevalence of tinnitus within a TMD population and to determine an association between the presence of tinnitus and type of TMD diagnoses. METHODS: A secondary data analysis was performed using data from ‘Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) baseline (Validation project) study and follow up (Impact project) study. Self-reported questionnaires for reporting tinnitus and medical history and gold standard diagnoses after clinical examination were used. Log-binomial regression was used to compute risk ratios for tinnitus by TMD subtype and adjusted for patient characteristics. All statistical analysis was performed using SAS 9.3 software (SAS Institute), and a two-sided significance level of 0.05 to determined statistical significance (p<0.05). RESULTS: At baseline, 614 subjects met required criteria for TMD diagnosis. Prevalence of tinnitus within sample was 41% (253 of 614). Approximately 80% of TMD subjects received a MPD diagnosis. Tinnitus frequency in the MPD group was 48% (238/495) while subjects without MPD diagnosis the rate of tinnitus was 13% (15 of 119). Using log-binomial regression analysis, the risk ratio for tinnitus was calculated.