Anatomy of Ear: Middle Ear

Middle ear muscles are innervated by 

a). Cranial nerve VII
b). Cranial nerve V
c). Cranial nerve VII and VIII
d). Cranial nerve VII and IX
e). Cranial nerve V and VII

Clinical Audiology: Diagnostic tests

Tone decay in excess of .......... is associated with retrocochelar pathology.

a). 10 dB HL
b). 10 dB SL
c). 30 dB HL
d). 30 dB SL
e). 40 dB SL