Exam 3: External Ear

Question 1

Feature between Inf crus of antihelix and helix

Answer 1

Cymba concha

Question 2

Cavity leading to EAM

Answer 2

Concha

Question 3

“Goat’s beard” of auricle

Answer 3

Tragus

Question 4

Palpable post projection corresponding to concha of auricle

Answer 4

Eminentia concha

Question 5

Palpable pos projection of eminentia concha of auricle

Answer 5

Ponticulus

Question 6

Extrinsic Muscles of auricle

Answer 6

Ant auricular
Sup auricular
Post auricular
Temporoparietalis

Question 7

Branches of external carotid artery supply auricle

Answer 7

Occipital
Post auricular
Superficial temporal.

OPS

Question 8

Sensory Innervation of auricle derived from

Answer 8

Greater auricle C2, C3
Lesser occipital C2
Auriculotemporal, mandibular div trigeminal 
Post auricular cutaneous nerve, facial 
Auricular nerve, vagus

Question 9

Sensory info from ear carried in spina branches to neurons in what ganglion

Answer 9

Dorsal nerve root ganglion

Question 10

Auricle innervated by branches of which CN

Answer 10

Trigeminal
Facial
Vagus

Question 11

Sensory info from auricle carried in facial nerve to neurons in what ganglion

Answer 11

Semilunar or geniculate

Question 12

EAM lies between

Answer 12

Concha of auricle and tympanic membrane of middle ear

Question 13

Part of EAM protected by cartilage

Answer 13

Lateral 1/3

Question 14

Medial part of EAM protected by

Answer 14

Temporal bone

Question 15

Skin lining EAM contains what modified sebaceous gland

Answer 15

Ceruminous glands

Question 16

Cerumen

Answer 16

Product of ceruminous glands forming bulk of ear wax

Question 17

Vascularization of EAM derived from what branches of external carotid artery

Answer 17

Post auricular
Internal maxillary
Superficial temporal

PIS

Question 18

EAM transmits sensory Innervation via which CN

Answer 18

Auriculotemporal, mandibular trigeminal

Auricular, vagus