PPT-The Middle Ear Middle ear Anatomy

Air containing cavity Lined with mucous membrane Containing auditory ossicles Lies in the petrous part of the temporal bone Surfaces Roof tegmen tympani tegmental roof Floor jugular bulb. The Human Ear. Composed of outer, middle and inner ear. The Outer Ear. The visual part of the ear. Composed of pinna and auditory canal. The pinna acts as a funnel, collecting sound waves and directing them to the auditory canal. La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . Anatomy. Inner ear consists of :. Bony Labyrinth: filled with a fluid called . perilymph, . consists of 3 parts:. The Vestibule. The Semicircular Canals: . 3 in number (Lateral, Posterior, Superior). Anatomy. Anatomy. External ear. tragus. auricle or pinna. Anatomy. Middle ear. Tympanic membrane. Ossicles. – malleus, incus, stapes. Eustachian tube. Oval window. Anatomy. Inner ear. Labyrinth. Membranous labyrinth – hair cells. . Section A. Anatomy. Part 1, . External Ear and Tympanic Membrane. Dr. Mike Smith and Dr Mahmood . Bhutta. Major Divisions of the Ear. Peripheral Mechanism. Central Mechanism. Outer Ear. Middle Ear. Causes. . can include:. Post-nasal epistaxis with dysfunction of the Eustachian tubes. Severe head trauma. Coagulopathy . Chronic otitis media. Spontaneous . hemotympanum. (rare cause). Vascular lesions (. Sandeep. . Madhukar. . Lahange. Associate Professor. Department of . Sharir. . Rachana. National Institute of . Ayurveda. . Jaipur. External ear. Auricle/. pinna. 2. External acoustic . meatus. external 1/3(8 mm) by cartilage . •Gross anatomy is the study of structures that can be seen with the naked eye.. •Microscopic anatomy is the study of structures that require a microscope to be seen. . Physiology is related to the functions of the body and all its parts, including cells, tissues and organs.. 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 1 st & 2 nd Branch Otitis. . externa. -Inflammation . of . epithelium of the vertical . or horizontal ear canal or . both and surrounding structure. Otitis. media . -Inflammation . of tympanic cavity &membrane. Otitis. otological. anatomy for undergraduate medical students). . Dr.Rafid. Y. . Jabbar. . ENT Lecturer. MRCS,DOHNS,FRCS(Glasgow). Temporal bone . Ear divisions :. The ear consists of three main parts :. The challenge . in diagnosis. And. Case report. Inflammations of the middle ear (the commonest middle ear problems). Rare medical problems, are in fact play a challenging diagnosis. Objectives: . How to reach the proper diagnosis of middle ear mass. Chapter 19. Outline. I. Anatomy and Physiology of the Hearing Mechanism. II. General Facts About Hearing Loss. III. Conductive Hearing Loss. IV. Auditory Nervous System Impairments. V. Hearing Loss and Disorders of the Inner Ear. Sarah Robinson, Suzanne Thompson, Jont Allen. Negative middle ear pressure (NMEP). NMEP can affect other acoustic . measurements of hearing . (e.g. otoacoustic emissions). Static NMEP is very common .