Ear Anatomy and Examination

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Questions and Answers

What is the correct direction for ear wash?

Either direction

Wrong direction

Correct direction (correct)

No direction

What is the name of the type of otitis externa shown in Fig(36)?

Eczematous otitis externa (correct)

Seborrhoic dermatitis

Otomycosis

Diffuse otitis externa

What is the name of the type of fracture shown in Fig(40)?

Fracture base of the skull (correct)

Transverse fracture

Skull fracture

Longitudinal fracture

What is the stage of AOM shown in Fig(43)?

Stage of acute salpingitis Signup and view all the answers

What is the name of the type of CSOM shown in Fig(47)?

Tubo-tympanic CSOM Signup and view all the answers

What is the name of the type of abscess shown in Fig(54)?

Bezold's abscess Signup and view all the answers

What is the name of the type of tumor shown in Fig(65)?

Glomus tympanicum Signup and view all the answers

What is the name of the type of ossicles shown in Fig(69)?

Teflon piston Signup and view all the answers

What is the name of the tube shown in Fig(60)?

Grommet's tube Signup and view all the answers

What is the name of the type of paralysis shown in Fig(55)?

FN paralysis Signup and view all the answers

What is the name of the test that uses Frenzel's glasses?

Caloric test Signup and view all the answers

What is the term for the narrowing of the external auditory canal?

EAC stenosis Signup and view all the answers

What is the instrument used to examine the ear in Fig(5)?

Otoscope Signup and view all the answers

What is the term for the abnormal accumulation of blood in the perichondrial tissue?

Perichondrial hematoma Signup and view all the answers

What is the name of the test used to assess the mobility of the tympanic membrane?

Tympanometry Signup and view all the answers

What is the term for the inflammation of the perichondrial tissue?

Perichondritis Signup and view all the answers

What is the name of the instrument used to examine the ear in Fig(8)?

Siegle's speculum Signup and view all the answers

What is the term for the abnormal formation of the pinna?

Microtia Signup and view all the answers

Study Notes

Ear Anatomy

The ear consists of the auricle, tympanic membrane, and mastoid bone
The mastoid bone contains the sinudural, perisinus, superficail dural, and zygomatic sinuses

Ear Examination

Ear examination can be performed using an ear speculum, otoscope, microscope, and Siegle's speculum
Otoscopy is used to visualize the tympanic membrane
Tympanometry measures the movement of the eardrum and the pressure in the middle ear

Hearing Tests

Rinne's test compares air conduction to bone conduction
Weber's test determines whether sound is localized to one ear
Pure tone audiometry tests hearing thresholds for different frequencies
Tympanometry can also be used to assess eustachian tube function

Ear Disorders

Microtia is a congenital deformity of the auricle
Pre-auricular sinus is a small pit or dimple in front of the ear
Perichondrial hematoma is a collection of blood between the auricle and its cartilage
Cauliflower ear is a deformity of the auricle due to trauma

External Ear Infections

Impetigo is a bacterial skin infection
Erysipelas is a bacterial infection of the skin and lymphatic vessels
Rodent ulcer is a type of skin cancer
External ear carcinoma is a type of skin cancer
EAC stenosis is a narrowing of the external auditory canal
EAC atresia is a congenital absence of the external auditory canal
Foreign bodies in the ear can cause infections and other complications

Middle Ear Infections

Diffuse otitis externa is an inflammation of the external auditory canal
Frunculosis is an infection of the hair follicles in the ear canal
Otomycosis is a fungal infection of the ear canal
Eczematous otitis externa is an inflammation of the ear canal due to eczema
Seborrheic dermatitis is an inflammatory skin condition

Temporal Bone Fractures

Temporal bone fractures can be longitudinal or transverse
Longitudinal fractures involve the otic capsule and may damage the ossicles
Transverse fractures involve the petrous bone and may damage the facial nerve

Traumatic Perforations

Traumatic perforations of the tympanic membrane can occur due to injury
Otoscopy can be used to visualize the tympanic membrane and assess for perforations

Acute Otitis Media

Acute otitis media is an infection of the middle ear
It can cause a bulge in the tympanic membrane, which can rupture and cause discharge
Eustachian tube dysfunction can contribute to the development of acute otitis media

Chronic Otitis Media

Chronic otitis media can cause central or attic perforations of the tympanic membrane
Cholesteatoma is a complication of chronic otitis media that involves a pocket of epithelial cells in the middle ear
Marginal posterior perforations are common in chronic otitis media

Complications of Otitis Media

Mastoiditis is an infection of the mastoid bone
Petrositis is an infection of the petrous bone
Labyrinthitis is an infection of the inner ear
Facial nerve paralysis can occur due to otitis media

Other Ear Disorders

Secretory otitis media is a type of chronic otitis media characterized by a thick, sticky fluid in the middle ear
Glomus tympanicum is a benign tumor that grows on the promontory of the middle ear
Middle ear carcinoma is a rare type of cancer
Otosclerosis is a condition that affects the middle ear bones and can cause hearing loss

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Description

This quiz covers the anatomy of the ear, including the auricle, tympanic membrane, and mastoid bone, as well as ear examination techniques and hearing tests.