What is the function of each parts of the ear?

The eardrum vibrates. The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles. The ossicles amplify the sound. They send the sound waves to the inner ear and into the fluid-filled hearing organ (cochlea).

What are the basic parts of the ear?

The parts of the ear include:

• External or outer ear, consisting of: Pinna or auricle. This is the outside part of the ear.
• Tympanic membrane (eardrum). The tympanic membrane divides the external ear from the middle ear.
• Middle ear (tympanic cavity), consisting of: Ossicles.
• Inner ear, consisting of: Cochlea.

What are the functions of outer ear?

The Outer Ear It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.

What is function of middle ear?

The primary function of the middle ear is to offset the decrease in acoustic energy that would occur if the low impedance ear canal air directly contacted the high-impedance cochlear fluid.

What is the function of vestibule?

The vestibular organs send information to the brain via the vestibular nerve, which joins the cochlear nerve to become the eighth cranial nerve, the vestibulocochlear nerve. The main function of the vestibular system is to maintain balance and to coordinate eye movement with head and body position.

What are the 6 structures of the inner ear?

The cochlea is the most critical component of the inner ear. It is divided into three fluid-filled chambers, called scalae, that spiral around a bony core….

• Right eustachian tube.
• Right eustachian tube cartilage.
• Right osseous labyrinth.
• Right tympanic membrane.
• Right malleus.
• Right incus.
• Right stapes.

What is the function of malleus incus and stapes?

The middle ear consists of the tympanic membrane and the bony ossicles called the malleus, incus, and stapes. These three ossicles connect the tympanic membrane to the inner ear allowing for the transmission of sound waves.

What is the function of the outer middle and inner ear?

The function of the outer ear is to collect sound waves and guide them to the tympanic membrane. The middle ear is a narrow air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bones—the malleus (hammer), incus (anvil), and stapes (stirrup), collectively called the auditory ossicles.

What is ampulla in ear?

The ampulla is a localized dilatation at one end of the semicircular duct. A patch of innervated hair cells is found at the base of the ampulla in a structure termed a crista (meaning crest). The crista contains hair cells with stereocilia oriented in a consistent direction.

What is the function of the otoliths?

Function of the otolith organs: The otolith organs sense gravity and linear acceleration such as from due to initiation of movement in a straight line. Persons or animals without otolith organs or defective otoliths have poorer abilities to sense motion as well as orientation to gravity.