Auditory and Vestibular Systems Flashcards
What are the ossicles of the middle ear?
Malleus, incus and stapes
What nucleus is important in sound localisation and as relays for stapedial and tensor tympani reflexes?
Superior olivary nucleus and nucleus of lateral lemniscus
Fibres carrying information regarding low frequency sound end in what part of the auditory cortex?
Anterolateral part
Fibres carrying information regarding high frequency sound end in what part of the auditory cortex?
Posteromedial part
What is aphasia?
Inability to use language
What part of the brain can cause aphasia?
Broca’s area and Wernicke’s area
Maintenance of equilibrium uses information from?
Vision, proprioception and the vestibular apparatus
Detecting position and motion depend on?
Hair cells
Hair cells in the utricle and saccule detect?
Head position
Hair cells in the semicircular canals detect?
Movement
What does each semicircular duct contain?
Ampulla
What is within the ampulla?
Cirsta ampullaris
What does the semicircular duct consist of?
Core of connective tissue bulging into the lumen with epithelium containing hair cells with stereocilia
Where are the stereocilla embedded in?
Dome of gelatinous material called cupola
What are the two swellings in the vestibule?
Utricle and Saccule
