QuestionSBA
QuestionChoice
The mastoid antrum is mostly innervated by the glossopharyngeal nerve.
10027077
b
The mastoid antrum in the petrous temporal bone is innervated by the greater petrosal branch of the facial nerve
QuestionChoice
The crista ampullaris is a ridge of sensory cells in the walls of the ampullae of the inner ear. These cells detect the movement of endolymph as the head moves. This movement is converted to electrical signals which are transmitted by the vestibular branch of the vestibulocochlear nerve.
10027076
a
The crista ampullaris transduces and fires signals via the vestibular branch of the vestibulocochlear nerve
QuestionChoice
The auriculotemporal branch of the mandibular trigeminal nerve innervates the superoanterior quadrant of the external auditory meatus. The superoposterior quadrant is innervated by the lesser occipital nerve, from C2 spinal level.
10027080
e
The superoposterior quadrant of the external auditory meatus is innervated by the auriculotemporal branch of the mandibular trigeminal nerve
QuestionChoice
The superior half of the external tympanic membrane is innervated by the vagus nerve. The inferior half of the external tympanic membrane is innervated by the mandibular trigeminal nerve.
10027079
d
The external tympanic membrane is innervated by the greater auricular nerve from spinal levels C2-3
QuestionChoice
The tensor tympani muscle is innervated by the mandibular branch of the trigeminal nerve, working to dampen sound vibrations from the tympanic membrane.
10027078
c
The tensor tympani muscle is innervated by the facial nerve
Concept
Chapter
2693
5952
Middle ear anatomy
Topic
186
Ear, Nose and Throat
17813
Which statement regarding the innervation of the ear is correct?
a