Anatomy
Humans have 12,000 per ear
What are outer hair cells?
high in Sodium
What is Perilymph?
Reason for 2 components
What is hearing and balance?
on scala tympani – bulges out as stapes pushes in, and vice versa
What is Round Window?
Humans have 3,500 per ear
What are inner hair cells?
2 components of the inner ear
What is Cochlea and Vestibular system?
high in Potassium
What is Endolymph?
Modes of operation
What are Mechanical, Hydrodynamic, and Electrochemical?
on scala vestibuli, connected to stapes footplate
What is Oval Window
Makes about 2 3/4
"turns"
What is the cochlea?
Where structures are encased
What is the temporal bone?
like perilymph
What is Cortilymph?
20 micrometers long at base and 50 micrometers long at apex
What are outer Hair Cells?
Divides scala media from scala tympani, undergoes wave motion- very elastic
What is Basilar membrane?
The functions of the inner ear
What are filtering, distribution, and transduction?
35 mm long from
the "base" to the
"apex“
What is the Cochlea?
the inner core of the inner ear
What is the Membranous labyrinth
Three scalae
What are the scala media, scala vestibuli, and scala tympani?
Divides scala vestibuli from scala media – single-cell layer
What is Reissners membrane?
The tallest row are embedded in tectorial membrane
What is Steroecilia of OHC?
Organ of Corti Support Cells
What are Hensen cells, Claudius cells, Outer spiral sulcus cells, Deiters cells, Inner sulcus cells (inner spiral sulcus cells), Inner phalangeal cells (inner supporting cells)
the space within the temporal bone that
encases the inner ear
What is the Bony Labyrinth?
Cell organelles consistent with a high metabolic rate and muscle-like capabilities
What are Outer Hair Cells
On lateral wall of scala media; the “battery” of the ear
What is Stria Vascularis?
Stereocilia are connected by fibers called
What are cross-links?