Sentences with phrase «middle ear bone»

They achieve this with a single middle ear bone, rather than the three we have — again a product of their reptilian ancestry.

Tiny middle ear bones belonging to two of our australopith forebears reveal that the hominins lacked our sensitivity to speech frequencies

Because development often reprises stages of evolution, the growth of embryonic ears in tandem with the jaw is no accident: the sound - transmitting middle ear bones that are a distinguishing feature of mammals evolved from what used to be gill arches in fish and jawbones in reptiles.

Now, researchers at the University of Bristol and the University of Lincoln, both in the United Kingdom, think they have discovered a mechanism in the ears of Copiphora gorgonensis, a species of katydid from the forests of Colombia, that rivals the middle ear bones in mammals.

The middle ear bones (malleus, incus and stapes) were identified in the scans, held in place inside the skull by sediments from the La Ferrassie cave floor.

Not exact matches

The bones of the middle ear and the nerve endings from the brain are developing so that your baby will hear sounds such as your heartbeat and blood moving through the umbilical cord.

An ear infection is most often a bacterial or viral infection that affects the middle ear, the air - filled space behind the eardrum that contains the tiny vibrating bones of the ear.

Delicate bones in the middle ear, known as ossicles, convey the vibrations of the eardrum to the cochlea, the small, spiral chamber in the inner ear that converts acoustic signals to electrical.

In the middle ear, pressure oscillations in the air are transferred via the tympanic membrane (eardrum) and one or three small bones (ossicles) to fluid movements in the inner ear, where the conversion of sound waves to nerve signals takes place.

«The combination of a mouth cavity and bone conduction allows Gardiner's frogs to perceive sound effectively without use of a tympanic middle ear,» concludes Renaud Boistel.

The prosthetic device allows the bones in the middle ear to resume movement, which stimulates fluid in the inner ear, and improves or restores hearing.

Hearing works partly through the transmission of vibrations from the ear drum to the cochlea, the sensory organ of hearing, via three tiny bones in the middle ear known as ossicles.

Now they're getting a better idea of how our ears formed thanks to a 370 - million - year - old fish, whose jawbone was beginning to resemble a bone found in our middle ear.

All four surgeons were able to correctly match the prosthesis model to its intended temporal bone — the bone containing the middle and inner parts of the ear.

The middle ear evolved as primitive fish (top) became more advanced (bottom): The spiracle enlarged as the proportions of other bones (yellow, blue) changed.

Sound waves travel through the ear canal before reaching the eardrum and the tiny bones of the middle ear.

For instance, haplorhines have a middle ear with two chambers and a plate of bone that shields the eyes from the chewing muscles.

The precise cause of Tinnitus is still not fully understood but it is established that it is a symptom generated within a person's own auditory pathways as a result of hearing defects including infection, a blocked ear canal or eustachian tube, otosclerosis (overgrowth of bone in the middle ear), labyrinthitis and Meniere's disease.

Surgery is possible may be advised if the abscess is in or under the skin; abscesses of the middle ear (causing balance problems), in the eyeball (causing blindness), in the mandible (jaw bone) or in the internal organs, are less easy to treat.

The tympanic membrane, an air - filled chamber containing three tiny bones (hammer, anvil and stirrup), along with the eustachian tube (an air - filled tube connecting to the junction of the nose and mouth) form the middle ear.

Horner's syndrome (miosis, ptosis, enophthalmos) of the ipsilateral eye may be present with either middle or inner ear disease in dogs and cats, because the sympathetic trunk passes through the middle ear in close proximity to the petrosal bone.

The middle ear contains the eardrum (tympanic membrane) and the tiny auditory bones that lie just behind it.

The bones of the middle ear and the ear drum are removed as well.

In such cases, all the diseased tissue: the entire ear canal, bones of the middle ear etc. are simply removed, the middle ear is drained, and the healthy tissue around the ear is closed.

CT on the other hand is very sensitive in evaluating the small bones in the nose, the thin bone that separates the nasal cavity from the brain, and the bulla of the middle ear.

The tumor was removed as well as his entire ear canal and bones of the middle ear.

Presbycusis is due to a gradual thickening of the bones in the middle ear.