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Nov 3, 2023 · The medial aspect of the ear lobe is attached to the skull and has no major practical significance. The lateral aspect is concave and presents numerous grooves and ridges. The outer rim of the auricle is called the helix, which then inferiorly ends as soft tissue known as the lobule of auricle (or ear lobe). The helix has three parts: crus ...
Oct 2, 2016 · Cross-sectional imaging has evolved rapidly and has surpassed the radiography and plain film tomography. [1, 2] Most of the middle ear pathologies appear as soft tissue attenuation on HRCT. [3, 4] The final diagnosis is usually a combination of radiological and clinical findings. [1, 5] Disorders of the middle ear are common in the population.
- Arangasamy Anbarasu, Kiruthika Chandrasekaran, Sivasubramanian Balakrishnan
- 10.4103/0971-3026.111483
- 2012
- Oct-Dec 2012
Mar 14, 2024 · The ear anatomy consists of three parts: the outer Ear, middle Ear, and inner Ear. The outer Ear is the part you can see, including the flap of skin called the pinna and the tube-like ear canal. The middle Ear is inside your head, and there is a space called the middle Ear. It has three tiny bones called ossicles and a cavity called the ...
- Introduction
- External Ear
- Tympanic Membrane
- Middle Ear
- Inner Ear
- Key Points
- References
The ear can be divided into three parts: the external, middle andinner ear. The ears are an organ of hearing and balance, converting information from our external environment into electrical signals that can be processed by the brain. This article will explore the three anatomical sectionsof the ear, highlighting their individual anatomy and functi...
The external ear is the part of the ear we can see with the naked eye. It is attached to the lateral aspect of the head and is characteristically divided into two parts: the auricle or pinna and the external acoustic meatus (more commonly referred to as the ear canal).1,2,3
The tympanic membrane, or eardrum, marks the borderbetween the external and middle ear. It is formed of a middle layer of connective tissuewith a layer of skin on its lateral surface (facing the external acoustic meatus) and mucous membrane on its medial surface (facing the middle ear). The tympanic membrane lies at an oblique angle that helps maxi...
The middle ear, also referred to as the tympanic cavity, is an air-filled section in the temporal bone and is lined with a mucous membrane.1,2,3 It can be split into two main sections: 1. The tympanic cavity proper: this is the space directly internal to the tympanic membrane 2. The epitympanic recess: this is the space behind pars flaccida
The inner ear is the home of the vestibulocochlear organs, the organs that are responsible for receiving sound waves and converting them intoelectrical signalsto be interpreted by the brain and maintaining balance by recognising the position and movement of the body. Within the inner ear, there are two types of labyrinth. The membranous labyrinth i...
The ear can be divided into external, middle and inner parts.The external earcontains the auricle, external auditory meatus and tympanic membrane. These structures all work together to conduct and amplify sound waves into the middle ear.The middle earcontains the auditory ossicles, these transmit sound waves to the inner ear. The muscles that attach to these ossicles are important in controlling the amplitude of these sound waves...Also in the middle ear is the opening of theeustachian tubewhich serves as a connection between the middle ear and nasopharynx, to equalise pressure within the middle ear to atmospheric pressure.Gray’s Anatomy for Students, Fourth Edition.Moore’s essential clinical anatomy, Sixth Edition.Netter’s clinical anatomy, Fourth EditionUniversity of Dundee. Anatomy of the external ear. Licence: [CC BY-NC-ND]- Natasha Beard
Mar 23, 2024 · The osseous portion refers to the third of the Eustachian tube nearest to the middle ear. It can be variably surrounded by peritubal air cells. Along the roof of the osseous part of the Eustachian tube is a canal containing the tensor tympani muscle. The distal end of the osseous portion is formed by the petrous part of the temporal bone.
Nov 24, 2022 · The external ear comprises of two components. There is a cartilaginous portion, known as the pinna or auricle and a bony, tubular segment called the external acoustic meatus. The former portion of the auditory system is the first point at which sound wave modification begins. It collects sound waves in the series of “hills and valleys” and ...
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Aug 16, 2020 · The tympanic membrane is a relatively thin connective tissue structure, and is susceptible to perforation (usually by trauma or infection). An infection of the middle ear (otitis media) causes pus and fluid to build up behind the tympanic membrane. This causes an increase in pressure within the middle ear, and eventually the eardrum can rupture.
