CME quiz Anatomy of Middle ear by drtbalu

Synonyms of middle ear include
1. Tympanum
2. Protympanum
3. Eustachean tube
4. Epitympanum
Lateral wall of tympanum is formed by
1. Eustachean tube
2. Tympanic membrane
3. Promontry
4. Cochlea
Lateral wall of epitympanum is formed by
1. Pars tensa of ear drum
2. Pars flaccida of ear drum
3. Promontory
4. Cochlea
Scutum is also known as the
1. Eustachean tube bony portion
2. COG
3. Tensor tympani projection
4. Outer attic wall
The difference between pars tensa and pars flaccida is
1. The lack of external squamous layer in pars tensa
2. The lack of inner mucousal layer in pars tensa
3. Lack of middle fibrous layer in pars flaccida
4. Lack of middle fibrous layer in pars tensa
Posterior canaliculus for corda tympani nerve is seen
1. At the junction between lateral and posterior walls of tympanic cavity
2. At the junction between anterior and medial walls of tympanic cavity
3. At the junction of posterior and medial walls of tympanic cavity
4. At the medial wall of tympanic cavity
Glaserian fissure is also known as
1. Squamotympanic fissure
2. Petromastoid fissure
3. Petrotympanic fissure
4. Squamomastoid fissure
Important content of Glasserian fissure is
1. Facial nerve
2. Chordatympani nerve
3. Eustachean tube
4. Anterior malleolar ligament
Glaserian fissure transmits
1. Chorda tympni nerve
2. Facial nerve
3. Labyrinthine artery
4. Anterior tympanic branch of maxillary artery
Canal of Hugier contains
1. Facial nerve
2. Anterior tympanic artery
3. Chordatympani nerve
4. Anterior malleolar ligament
Canal of Hugier lies
1. Medial to glasserian fissure
2. Lateral to glasserian fissure
3. Lateral to petrotympanic fissure
4. Superior to Glasserian fissure
Roof of the middle ear cavity is formed by
1. Mastoid process
2. Tegment tympani
3. Promontory
4. Cog
Petrosquamous suture line is seen in
1. The roof of the middle ear cavity
2. Medial wall of middle ear cavity
3. Close to the ear drum
4. Labyrinth
Anterior wall of middle ear is formed by
1. Convergence of medial and lateral walls
2. Promontory
3. Aditus
4. Short process of incus
Lower portion of the middle ear anterior wall is related to
1. Mastoid antrum
2. Aditus
3. Internal carotid artery
4. Maxillary artery
Carotico tympanic nerves enter middle ear cavity via
1. Medial wall
2. Posterior wall
3. Roof
4. Anterior wall
Number of caroticotympanic nerves which enter the middle ear cavity are
1. one in number
2. Three in number
3. Two in number
4. Four in number
Upper portion of the anterior wall of middle ear cavity is related to
1. Internal carotid artery
2. Carotico tympanic nerves
3. Eustachean tube
4. Promontory
Medial wall of middle ear cavity is formed by
1. Mastoid air cells
2. Antrum
3. Promontory
4. Eustachean tube
Promontory is formed by
1. Lateral semicircular canal
2. Utricle
3. Saccule
4. Basal turn of cochlea
Grooves on the promontory contain
1. Lymphatics
2. air cells
3. Tympanic plexus
4. Branches of internal auditory artery
Above and slightly behind the promontory lies
1. Oval window
2. Round window
3. Stapedial tendon
4. Pyramid
Inferior border of oval window is
1. Convex
2. Concave
3. Straight
4. linear
Above the oval window lies
1. Promontory
2. Horizontal portion of facial nerve
3. Vertical portion of facial nerve
4. Facial recess
Tunnel for tensor tympani muscle lies
1. In the medial wall of middle ear
2. In the anterior wall of middle ear
3. In the lateral wall of middle ear
4. In the posterior wall of middle ear
Round window membraneis made up of
1. One layer
2. Two layers
3. Three layers
4. Four layers
Secondary tympanic membrane provides a reliable landmark for
1. Cochlear nerve
2. Singular nerve
3. Facial nerve
4. Chorda tympani nerve
The closest vestibular structure to the secondary tympanic membrane is
1. Lateral canal
2. Superior canal
3. Ampulla of posterior canal
4. Utricle
The oval and round windows are separated by
1. Ponticulous
2. Chorda tympani nerve
3. Subiculum
4. Eustachean tube
Round window niche is __________ in shape
1. Circular
2. Oval
3. Triangular
4. Ovoid
Sinus tympani lies under
1. Pyramid
2. Cog
3. Eustachean tube
4. Malleus
Posterior wall of middle ear cavity is
1. Of the same size along the entire length of the middle ear
2. Is wider above than below
3. Is wider below than above
4. The communication of middle ear to the eustachean tube
Overall length of the malleus is
1. 2-4 mm
2. 1-2 mm
3. 15 mm
4. 7.5 - 9 mm
Tendon of tensor tympani inserts into
1. Anterior process of handle of malleus
2. Medial surface of the handle of malleus
3. Head of the malleus
4. Close to the articular facet of the malleus
Commonest portion of ossicle which easily undergoes necrosis is
1. Head of malleus
2. Handle of malleus
3. Crura of stapes
4. Long process of incus
Stapedial muscle is supplied by
1. Mandibular nerve
2. Chorda tympani nerve
3. Facial nerve
4. Trigeminal nerve
Taste fibres travelling via chorda tympani nerve supplies
1. The entire tongue
2. Posterior 1/3 of tongue
3. Lateral surface of tongue
4. Anterior third of tongue
Tympanic plexus is seen over
1. Lateral surface of ear drum
2. Medial surface of ear drum
3. Promontory
4. Attic region
Mucosal lining of attic region is
1. Ciliated columnar
2. Cuboidal
3. Squamous
4. Pavement
Type of mucosa lining hypotympanum is
1. Pavement epithelium
2. Ciliated columnar epithelium
3. Squamous epithelium
4. Cuboidal epithelium

CME quiz Anatomy of Middle ear by drtbalu

Anatomy of middle ear cavity CME quiz