Download MBBS Anatomy PPT 99 Organs Of Hearing And Equilibrium 1 Notes

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Learning Objectives

Students should be able to

? Describe & identify the parts, blood supply and nerve supply

of external ear

? Describe & demonstrate the boundaries, contents, relations

and functional anatomy of middle ear and auditory tube

Auricle
Continued....

Common anomalies of the auricle


Continued.......


External Acoustic Meatus

External, Middle and Inner Ear


Medial, Anterior and Posterior Wal of the

Left tympanic Cavity

Shape and Dimensions of Middle Ear Cavity


Wal s of Middle Ear Cavity and Content

Anatomy of the Infratemporal Portion of the

Facial Nerve
Facial Nerve in Relation to Ear

Auroscopic view of the left tympanic

membrane(Lateral Wal )


Contents of Middle Ear Cavity

Chorda Tympani Nerve


Nerve Supply of Middle Ear (Tympanic plexus)
Lymphatic Drainage of Middle Ear

? Preauricular
? Retropharyngeal

Clinical Correlates

? Otitis Media
? Mastoiditis
? Tympanic Perforation and Myringoplasty
? Otosclerosis, stapedectomy and stapedotomy
? Cholesteatoma




Continued.......

Continued.......
MCQs

Question:- Which of the following is correct about Cholesteatoma in

middle ear?
a. Presence of transitional epithelium
b. Presence of stratified columnar epithelium
c. Presence of stratified cuboidal epithelium
d. Presence of keratinized stratified Squamous epithelium

Question:- Which of the following represents the correct reason for

presence of Preauricular sinus
a. Failure of fusion of first and second brachial arches
b. Failure of fusion of second and third brachial arches
c. Failure of fusion of third and fourth brachial arches
d. Failure of fusion of fourth and fifth brachial arches