Vet Med Term. Ch 14: Seeing and Hearing (Hearing)

The combing froms that mean ear are:

Audit/o

And/i

Ot/o

— and — are combining froms for sound and hearing

Acoust/o and Acous/o

The — is the external protion of the ear that catches sound waves and transmites them to the ecternal auditory canal

Pinna

The pinna also is known as the —

Auricle

The combining froms — means external ear; — and — mean external ear or just ear

Pinn/i

Aur/i

Aur/o

The — is the tube that transmits sound from the pinna to the tympanic membrane; also know as the —

Externl auditory canal

External auditory meatus

Glans that line the external auditory canal secret — also know as earwax

Cerumen

The middle ear begins with the —; the medial term is —

Eardrum

Tympanic membrane

The combining froms — and — means eardrum

tympan/o and myring/o

The — are three little bones of the middle ear that transmit sound vibrations

Auditory ossicles

—= auditory ossicle know as the hammer (Bone of the middle ear)

Malleus

—= auditory ossicle know as the anvil (Bone of the middle ear)

Incus

—= auditory ossicle know as the stirrup (Bone of the middle ear)

Strapes

The — follos the auditory ossicles which is the narrow duct that leads from the middle ear to the nasopharynx

Eustachian tube

Also called the Auditory tube

The — located at the base of the stapes, is the membrane that seoarates the middle and inner ear

Oval window

The — is the membrane that recives sound waves through fluid after they have passed through the cochlea

Round window

The — is the osseous chamber at the base of the skull

Tympanic bulla

— is the medical term for larg vesicle

Bulla

The inner ear consists of three spaces in the temporal bone assembled in the —

Bony labyrinth

The combining form — means maze, labyrinth, and inner ear

Labyrinth/o

The bondy labyrinth filled with a waterlike fluid called —-

Perilymph

A membranous sac is suspended in the perilymph and follows the shape of the bony labyrunth. This membranous labyrinth is filled with a thicker fluid called —

Endolymph

—= located adjacent to the oval window and between the semicircular canals and cochlea

Vestibule

—= located adjacent to the vestibule. The three canals are the vestibular, tympanic and coclear

Semicircular canals

Each canal has a dilated area called the — that contaisn sensory cells with hairlike extensions

Ampulla

—= sprial shaped passage that leads from the oval widow to the inner ear.

Cochles

Combining from: cochle/o

—= Membranous tube in the body cochlea that is filled with endolymph

Cochlear duct

—= spiral organ of hearing located in the cochlea that receives and relays vibrations

Organ of Corti

Sound waves enter the ear thorugh the pinna, travel through the external auditory canal and strike the tympanic membrane. This is called —

Air conduction

As tympanic membrane vibrates, it moves the ossicles. The ossicles conduct sound wave though the middle ear. This is called —

Bone conduction

Stimulation of hairlike cells in the organ of Corti initiates a nerve impluse that is transimitted to the vestibulocochlear nerve. This nerve impluse is then relayed to the brian. This is called —

Sensorineural conduction

— is the state of balance

Equilibrium

The membranous labyrinth inside the vestibule has a — and — which are small hairlike sacs

saccule and utricle

The saccule and utricle contain a —, an organ consisting of hair cells covered by a gelatinous mass containg — which are small stones

Macula

Otoliths

At the base of each canal is a swelliong called ampulla, which contains sensory organs called —

Cristae