Unit VIII - Ear Pt. 2 Flashcards Preview

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Flashcards in Unit VIII - Ear Pt. 2 Deck (70)
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61

Which branch to the vestibular ganglion carries information from the anterior and lateral semicircular ducts, utricle, and some from the saccule?

Superior branch

62

Through what nerve is information carried from the saccule to the superior branch?

Voit's nerve

63

The inferior branch to the vestibular ganglion carries information from where?

Posterior semicircular duct and saccule

64

What nerve is made up of axons from the vestibular ganglion?

Vestibular nerve

65

What makes up the blood supply to the labyrinth?

Internal auditor artery, a branch from the basilar artery
Stylomastoid artery, a branch from the posterior auricular artery

66

What makes up the nerve supply to the labyrinth?

Sympathetics from cavernous and/or internal carotid plexuses
Cochlear nerve
Vestibular nerve

67

The cochlear nerve is composed of axons of cells from where?

Spiral ganglion

68

What is the pathway of information through the cochlear nerve?

Cochlear nuclei --> superior olivary and trapezoid nuclei in medulla oblongata --> lateral lemniscus --> inferior colliculi and medial geniculate bodies --> temporal lobe (Bdmn. areas 41 and 42)

69

The vestibular nerve is composed of axons from where?

Vestibular ganglion

70

What is the pathway of information through the vestibular nerve?

Vestibular nuclear complex of medulla oblongata --> processed in cerebellum