PNS FINAL THE EAR UPDATED QUESTIONS AND
ANSWERS
What is the name of the Ectodermal thickening on the lateral "head" of the ear - CORRECT
ANSWER✅✅✅Placode
When the Placode invaginates, it gives rise to what structures - CORRECT ANSWER✅✅✅Auditory Pit
and Auditory Vesicle
What does the Auditory Vesicle give rise to - CORRECT ANSWER✅✅✅Membranous Inner Ear
What is the Auditory Tube and Tympanic Cavity derived from - CORRECT ANSWER✅✅✅First
Pharyngeal Pouch
What is the Malleus derived from - CORRECT ANSWER✅✅✅Dorsal End of the Ventral Mandibular
Cartilage
What does the Incus develop from - CORRECT ANSWER✅✅✅Dorsal end of the First Pharyngeal Arch
What does the Stapes derive from - CORRECT ANSWER✅✅✅Dorsal End of the Second Pharyngeal
Arch
What does the Tympanic Membrane develop from - CORRECT ANSWER✅✅✅Interstitial Mesoderm
What does the External Acoustic Canal develop from - CORRECT ANSWER✅✅✅First Pharyngeal
Groove
What does the Auricle develop from - CORRECT ANSWER✅✅✅A groove next to the First Pharyngeal
Groove
, What two parts make up the external ear - CORRECT ANSWER✅✅✅Auricle and External Acoustic
Meatus
Which of the extrinsic ear muscles is the smallest and inserts on the front of the helix - CORRECT
ANSWER✅✅✅Anterior Auricular
Which of the extrinsic ear muscles is the largest and inserts on the superior side of the auricle - CORRECT
ANSWER✅✅✅Superior Auricular
Which part of the External Acoustic Meatus is within the Temporal Bone - CORRECT
ANSWER✅✅✅The medial 2/3
What is produced by the modified sweat glands in the External Acoustic Meatus - CORRECT
ANSWER✅✅✅Cerumen
Where does the External Acoustic Meatus terminate - CORRECT ANSWER✅✅✅Tympanic Membrane
In which direction should you pull on the lobule to do an otoscopic exam - CORRECT
ANSWER✅✅✅Out, down and forward
The Posterior Auricular Artery is a branch of what major artery - CORRECT ANSWER✅✅✅External
Carotid
The Anterior Auricular Artery is a branch of which major artery - CORRECT ANSWER✅✅✅Superficial
Temporal
The Auricular Artery is a branch of which major artery - CORRECT ANSWER✅✅✅Occipital
Which nerves give sensory supply to the External Ear - CORRECT ANSWER✅✅✅Auriculotemporal
from CN V3, Auricular Branch of Vagus, Great Auricular nerve
ANSWERS
What is the name of the Ectodermal thickening on the lateral "head" of the ear - CORRECT
ANSWER✅✅✅Placode
When the Placode invaginates, it gives rise to what structures - CORRECT ANSWER✅✅✅Auditory Pit
and Auditory Vesicle
What does the Auditory Vesicle give rise to - CORRECT ANSWER✅✅✅Membranous Inner Ear
What is the Auditory Tube and Tympanic Cavity derived from - CORRECT ANSWER✅✅✅First
Pharyngeal Pouch
What is the Malleus derived from - CORRECT ANSWER✅✅✅Dorsal End of the Ventral Mandibular
Cartilage
What does the Incus develop from - CORRECT ANSWER✅✅✅Dorsal end of the First Pharyngeal Arch
What does the Stapes derive from - CORRECT ANSWER✅✅✅Dorsal End of the Second Pharyngeal
Arch
What does the Tympanic Membrane develop from - CORRECT ANSWER✅✅✅Interstitial Mesoderm
What does the External Acoustic Canal develop from - CORRECT ANSWER✅✅✅First Pharyngeal
Groove
What does the Auricle develop from - CORRECT ANSWER✅✅✅A groove next to the First Pharyngeal
Groove
, What two parts make up the external ear - CORRECT ANSWER✅✅✅Auricle and External Acoustic
Meatus
Which of the extrinsic ear muscles is the smallest and inserts on the front of the helix - CORRECT
ANSWER✅✅✅Anterior Auricular
Which of the extrinsic ear muscles is the largest and inserts on the superior side of the auricle - CORRECT
ANSWER✅✅✅Superior Auricular
Which part of the External Acoustic Meatus is within the Temporal Bone - CORRECT
ANSWER✅✅✅The medial 2/3
What is produced by the modified sweat glands in the External Acoustic Meatus - CORRECT
ANSWER✅✅✅Cerumen
Where does the External Acoustic Meatus terminate - CORRECT ANSWER✅✅✅Tympanic Membrane
In which direction should you pull on the lobule to do an otoscopic exam - CORRECT
ANSWER✅✅✅Out, down and forward
The Posterior Auricular Artery is a branch of what major artery - CORRECT ANSWER✅✅✅External
Carotid
The Anterior Auricular Artery is a branch of which major artery - CORRECT ANSWER✅✅✅Superficial
Temporal
The Auricular Artery is a branch of which major artery - CORRECT ANSWER✅✅✅Occipital
Which nerves give sensory supply to the External Ear - CORRECT ANSWER✅✅✅Auriculotemporal
from CN V3, Auricular Branch of Vagus, Great Auricular nerve
