Anatomy of ear(Part 1-External Ear) by Dr.K.AmrithaAnilkumar
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This document discusses the anatomy and clinical conditions of the external ear. It describes the structures of the external ear including the auricle, external acoustic canal, and tympanic membrane. It then explains various clinical conditions that can affect the external ear, such as perichondritis of the pinna, otitis externa, otomycosis, furunculosis, and cerumen impaction. References are also provided.
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- The ear is divided into external, middle, and inner sections. The external ear collects sound waves and the middle ear transmits vibrations via ossicles. The inner ear contains receptors for hearing and balance.
- The external ear includes the pinna, external auditory meatus, and tympanic membrane. The middle ear contains the ossicles, muscles, and nerves. The inner ear contains the cochlear and vestibular nerves which carry signals for hearing and balance.
- Key structures in the middle ear include the ossicles (malleus, incus, stapes), which transmit vibrations, and the muscles (tensor
Anatomy of External Ear and Middle Ear
Anatomy of Ear, Anatomy of External Ear, Anatomy of Middle Ear
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Ear discharge and otalgia
This document provides information on the anatomy and physiology of the ear, causes of ear pain (otalgia) and ear discharge, and discusses otitis externa and otitis media. It describes the external ear anatomy including the pinna, external auditory canal, and tympanic membrane. It also discusses the causes of otalgia and ear discharge, as well as otitis externa and the different types of otitis media including acute, chronic, and complications.
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This document discusses acute sinusitis, summarizing the anatomy and physiology of the paranasal sinuses, causes of acute sinusitis including bacterial and viral infections, and clinical features and treatment of the major types of acute sinusitis affecting the maxillary, frontal, ethmoid and sphenoid sinuses. Key points covered include the osteomeatal complex drainage pathway, common etiologies such as swimming and trauma, diagnostic tests including x-ray and CT scans, and medical and surgical treatment approaches including antimicrobial therapy, sinus irrigation and functional endoscopic sinus surgery. Complications of the different forms of acute sinusitis are also outlined.
Anatomy of ear for UG.pptx
Anatomy of ear for undergraduate students ( MBBS ) .
Basic anatomy of ear with its clinical importance
nerve supply of ear
blood supply of ear
middle ear ossicles
malleus incus stapes
muscles of middle ear
mastoid air cells
pinna tympanic membrane
lymphatics of ear
walls of middle ear
organ of corti
middle ear cleft
facial recess
sinus tympani
chorda tympani
embryology of ear
anatomy of external ear ^0 middle ear.pptx
The external ear consists of the auricle, external acoustic canal, and tympanic membrane. The auricle develops from the fusion of tubercles in the first and second branchial arches. The external acoustic canal has outer cartilaginous and inner bony portions. The tympanic membrane separates the external and middle ears. The middle ear consists of the tympanic cavity, eustachian tube, and mastoid air cells. The tympanic cavity contains the epitympanum, mesotympanum, hypotympanum, and protympanum. Important anatomical structures include the ossicles, facial nerve, chorda tympani, and openings for the oval and
Ear ppt
The document summarizes the anatomy and function of the ear. It describes the three parts of the ear - external, middle, and inner ear. The external ear includes the pinna and ear canal. The middle ear contains the auditory ossicles and muscles. The inner ear has the bony labyrinth and membranous labyrinth, including the cochlea for hearing and vestibule for balance. Common ear disorders like otitis media and types of hearing loss are also summarized.
Ear 19 mehr
This document provides an anatomical overview of the ear in 3 parts:
1. The outer ear including the pinna, external auditory meatus, and tympanic membrane.
2. The middle ear containing the ossicles (malleus, incus, stapes), muscles, nerves, and blood vessels. It also describes the walls and contents of the middle ear cavity.
3. The inner ear consisting of the bony and membranous labyrinth containing the cochlea, vestibule, and semicircular canals as well as their associated nerves and ganglia.
EAR-ANATOMY.pdf
The document describes the anatomy of the ear, including:
1. The ear is made up of 3 regions - external ear, middle ear, and inner ear. The middle ear contains the ossicles (malleus, incus, stapes) and converts acoustic to kinetic energy.
2. The middle ear cleft includes the tympanic cavity lined by mucosa, containing the ossicles. It is connected to the nasopharynx by the Eustachian tube and mastoid air cells by the mastoid antrum.
3. The tympanic membrane separates the middle ear from the external ear canal. It transmits vibrations to the ossicles and has a fibrous and mucos
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Anatomy of ear(Part 1-External Ear) by Dr.K.AmrithaAnilkumar
- 3. Kural 411 செல்வத்துட் செல்வஞ் செவிச்செல்வம் அச்செல்வம் செல்வத்து செல்லாந் தலல. TRANSLATION Wealth of wealth is wealth acquired be ear attent; Wealth mid all wealth supremely excellent. EXPLANATION : Wealth (gained) by the ear is wealth of wealth; that wealth is the chief of all wealth.
- 4. EXERNAL EAR
- 5. • Ear is divided into »1. external ear »2. Middle ear »3. internal ear
- 6. 1.External ear • Auricle/pinna • External acoustic canal/ auditory canal • Tympanic membrane/ drum head
- 8. External acoustic canal • It is 24mm, not a straight tube- so pinna has to be pulled upwards, backwards & laterally • It has 2 parts
- 9. Cartilaginous part -8mm Bony part – 16mm 2 deficiencies- “fissure of santorini”(parotid and superficial mastoid infection will appear ) Ceruminous & pilosebaceous glands – wax Has hair follicles ( prone to furuncle ) Lateral – isthumus( foreign bodies gets lodged )& antero inferior –anterior recess & foramen of huscke (4 yrs/ adult – parotid transmit infections ) Devoid of hair & ceruminous glands
- 11. Tympanic membrane / drum head • Pearly white semi translucent membrane • It has 2 parts – pars tensa & pars flaccida
- 12. Tympanic membrane / drum head • Pars tensa –periphery fibrocartilaginous ring called annulus tympanicus, deficient in the pars flaccida called notch of rivinus & inwards tented inwards called umbo • Pars flaccida/shrapnells membrane –situated above the lateral process of malleus
- 14. Nerve supply to tympanic membrane • Anterior ½ - auriculotemporal nerve • Posterior ½ - auricular branch of vagus nerve • Medial branch – tympanic branch of glossopharyngeal nerve ( Jacobson neve )
- 16. Relations • Superior –middle cranial fossa • Posterior –mastoid air cells & facial nerve ; p.superior –mastoid antrum ( acute mastoiditis) • Anterior -temporomandibular joint • Inferior -parotid gland
- 17. Nerve supply • Herpes zoster oticus – occur in facial neve ( concha & posterior part of tympanic membrane )
- 19. CLINICAL ANATOMY OF EXTERNAL EAR 1. Perichondritis pinna - inflammation of perichondrium with pus between perichondrium &cartilage - Pinna totally deformed Like cauliflower
- 20. 2. Otitis externa Acute inflammation of skin lining EAC Infective - Bacterial – furuncle - Fungal –otomycosis - Viral – herpes zoster oticus Reactive - Eczematous - Seborrheic - neurodermitis
- 21. 3. Otomycosis - Fungal infection affecting external ear - Predisposes Diabetes & immunocompromised - Infect. Org Aspergillus niger
- 22. 4. Furunculosis -Inflammation of hair follicles May spread - Subcutaneously Cause -- cellulitis - Infect. Org 1. Staphylococus 2. pseudomonas 3. proteus
- 23. 5. Cerumen/Miscellaneous wax Mixture of ceruminous & sebaceous gland with desquamated Epithelium in EAC Functions - Antibacterial - trap dust - foreign body
- 24. REFERENCES • Diseases of Ear, Nose and Throat & Head and Neck Surgery by P L Dhingra • BD Chaurasia's Human Anatomy Regional and Applied Dissection and Clinical: Vol. 3: Head-Neck Brain
- 25. A Special Thank you To A Very Special Doctor en love da Homoeopathy