WHAT IS IT?
a paired auditory organ
ear
main parts of ear
external(outer), middle, inner
what is the disadvantage of Eustachian tube?
its connection to nasopharynx - easily spread infection
a tube that connects the middle ear to the nasopharynx
Eustachian tube
cartilaginous parts of external ear
helix, antihelix, tragus, antitragus, concha,
what differences are in the Eustachian tubes in children?
more straight and shorter
benign or malignant mass in the ear
ear tumor
ear diseases
ear injury, infections, tumors, otosclerosis, Eustachian tube dysfunction, ruptured eardrum, Meniere's disease...
where is the center of balance?
inner ear (semi-circular canals, vestibule)
membrane that separates the outer and the middle ear
tympanic membrane (eardrum)
auditory ossicles (bones)
malleus, stapes, incus
how are the air filled cells in temporal bone called?
mastoid air cells
hair-like projections on top hair cells
stereo cilia
fluid filled parts of inner ear
cochlea, vestibule, semicircular canals
what is the term for reduction of sound by ear muscles?
acoustic reflex