Eye and Ears Flashcards
Partition between external auditory canal and middle ear
tympanic membrane
oval central portion of the bony labyrinth; contains utricle and saccule
vestibule
receptor for static equilibrium; also contributes to some aspects of dynamic equilibrium; consists of hair cells and supporting cells
Macula
Contains hair cells which are the receptors for hearing
spiral organ
Ear bones: malleus, incus, stapes
Auditory ossicles
The pressure equalization tube that connects the middle ear to the nasopharynx
Auditory or Eustachian tube
Contains the spiral organ
Cochlea
Fluid found within the membranous labyrinth; pressure waves in this fluid cause vibration of the basilar membrane
Endolymph
Receptor organs for equilibrium; the saccule, utricle, and semicircular canals
Vestibular apparatus
swollen enlargement in semicircular canals; contains structures involved in dynamic equilibrium
Ampulla
Opening between the middle ear and internal ear; is enclosed by a membrane called the secondary tympanic membrane
round window
The flap of elastic cartilage covered by skin that captures sound waves; the pinna
Auricle
Fluid found inside the bony labyrinth; bulging of the oval window causes pressure waves in this fluid
Perilymph
opening between the middle and inner ear; receives base of stapes
Oval window