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Flashcards in Unit 4 Deck (178)
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120

The external surface of the tympanic membrane is innervated by:
a. auricular nerve. b. tympanic nerve.
c. chorda tympanic. d. caroticotympanic nerve.

A. Auricular nerve of the vagus nerve

121

The internal surface of the tympanic membrane is innervated by the
a. auricular nerve.
b. tympanic nerve.
c. chorda tympanic
d. caroticotympanic nerve.

B. Tympanic nerve of the Glossopharyngeal nerve

122

Name the features on the medial wall of the tympanic cavity features.

Promontory of the labyrinthine wall
Oval window
Round window

123

The space superior to the tympanic membrane in the tympanic cavity is called _____.

Epitympanic recess

124

All of the following are the contents of the middle ear, EXCEPT
a. malleus.
b. incus.
c. stapes
d. modiolus

D. Modiolus

125

Which of the following indicates the floor of the tympanic cavity?
a. tegmental wall
b. jugular wall
c. carotid wall
d. mastoid wall

B. Jugular wall

126

Name the arteries which supply the pharyngotympanic tube.

Ascending pharyngeal artery of the external carotid artery
Middle meningeal artery of the maxillary artery
Artery of the pterygoid canal of the maxillary artery

127

The auditory ossicles transmit the sound wave from ____ to ____ leading to the vestibule of the bony labyrinth.

Tympanic membrane
Oval window (fenestra vestibule)

128

The ossicles are covered with regular osteogenic periosteum.
True/False

False

129

Name the part of the malleus that attaches to the flaccid part of the tympanic membrane.

Neck of the malleous

130

Which of the following describes the umbo correctly?
a. Tip of the handle of the malleus
b. Neck of the malleus
c. Tip o the handle of the incus
d. Neck of the stapes

a. Tip of the handle of the malleus

131

The lenticular process of the incus articulates with ____________.

The stapes

132

The tensor tympanic inserts into ___________.

Handle of the malleus

133

The head of the malleus lies in the _____________.

Epitympanic recess

134

The base of the stapes is considerably smaller than the tympanic membrane, as a result the vibratory force of the stapes is increased approximately _____ times over that of the tympanic membrane.

10

135

The auditory ossicles increase the force of the vibrations transmitted from the tympanic membrane. True/False

True but they decrease the amplitude

136

The tensor tympani arises from ____, and inserts to _____.

O: handle of the malleus
I: cartilaginous part of the pharyngotympanic tube, greater wing of the sphenoid, and petrous portion of the temporal bone

137

The tensor tympani is innervated by the __________.

Nerve to the medial pterygoid

138

Name the wall where the pyramidal eminence is for the stapedius muscle emergence.

Posterior wall of the tympanic cavity

139

The otic capsule of the internal ear contains _____, _____, and _____.

Cochlea
Vestibule
Semicircular ducts

140

The cochlea is the shell-shaped part of the bony labyrinth that contains _____ for the hearing.

Cochlear duct

141

Name the bony core of the cochlea.

Modiolus

142

The spiral canal of the cochlea begins at the ______ and makes ___ turns around the bony core.

Vestibule
2.5 turns

143

The bony core of the cochlea is called ___________.

Modiolus

144

The large basal turn of the cochlea produces the _______ on the labyrinthine wall.

Promontory

145

The large basal turn of the cochlea produces _____, which is part of the labyrinthine wall of the tympanic cavity.

The promontory

146

Name the communicating feature between the basal turn of the cochlea and the subarachnoid space superior to the jugular foramen.

Cochlear aqueduct

147

Name the structure, which close the round window at the basal turn of the cochlea.

Secondary tympanic membrane

148

The vestibule of the bony labyrinth is a small oval chamber that contains the _____ and _____.

Utricle
Saccule

149

Name the feature, which communicates the vestibule to the posterior cranial fossa.

Aqueduct of the vestibule