Exam 4 Study Guide of the Ear Flashcards
Name the arteries which supply the auricle
Posterior auricular a of Eternal Carotid A
Superficial temporal a of External Carotid A
Name the nerve which innervates the cranial surface of the auricle
Great auricular n of C2 & C3
Lymph from the superior half of the cranial surface of the auricle drains into the:
- superficial parotid lymph nodes
- mastoid lymph nodes
- superficial cervical lymph nodes
- deep cervical lymph nodes
Mastoid lymph nodes
Deep cervical lymph nodes
Name the gland which produces earwax
Ceruminous and sebaceous glands
What is the size in diameter of the tympanic membrane?
1 cm
They tympanic membrane is the partition between the ___ and ___
External auditory meatus
Tympanic cavity
Name the shallow central peak of the tympanic membrane
Umbo
The tympanic membrane faces anterior, inferiorly, and laterally. true or false
True
The superior to lateral process of the malleus attachment on the tympanic membrane is called
Flaccid part
The external surface of the tympanic membrane is innervated by the:
- auricular nerve of vagus
- tympanic nerve
- chorda tympani
- caroticotympanic n
Auricular n
The external surface of the tympanic membrane is innervated by what 2 nerves
Auriculotemporal of mandibular
Small auricular branch of vagus
The internal surface of the tympanic membrane is innervated by the:
- auricular n
- tympanic n
- chorda tympani
- caroticotympanic
Tympanic n of glossopharyngeal
Name the features on the medial wall of the tympanic cavity
Prominence
Tympanic n plexus
Round window
Oval windo
The space superior to the tympanic membrane in the tympanic cavity is called
Epitympanic recess
All of the following are the contents of the middle ear except:
- malleus
- incus
- stapes
- modiolus
Modiolus
Which of the following indicates the floor of the tympanic cavity:
- tegmental wall
- jugular wall
- carotid wall
- mastoid wall
Jugular wall
Name the arteries which supply the pharyngotympanic tube
Ascending pharyngeal a of External Carotid A
Middle meningeal a of Maxillary A
A of pterygoid canal of Maxillary A
The auditory ossicles transmit the sound wave from ___ to ___ leading to the vestibule of the bony labyrinth
Tympanic membrane to oval window
The ossicles are covered with regular osteogenic periosteum. True or False
False (lack it)
Name the part of the malleus that attaches to the flaccid part of the tympanic membrane
Neck of malleus
Which of the following describes the umbo correctly?
- tip of the handle of the malleus
- neck of the malleus
- tip of the handle of the incus
- neck of the stapes
Tip of the handle of the malleus
The lenticular process articulates with
Head of stapes
The tensor tympanic inserts into
Handle of malleus
The head of the malleus lies in the
Epitympanic recess
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 tympnaic membrane
10 times
The auditory ossicles increase the force of the vibrations transmitted from the tympanic membrane. True or False
True (also decrease the amplitude)
The tensor tympani arises from ___ and inserts to ___
Pharyngotympanic tube, greater wing of sphenoid, and petrous part of temporal
Handle of malleus
The tensor tympani is innervated by
N to the medial pterygoid of mandibular
Name the wall where the pyramidal eminence is for the stapedius muscle to emerge
Posterior wall of tympanic cavity
