Human Model, Ear

Quick Answer: The human model ear is an enlarged anatomical model of the ear showing the outer ear, the middle ear with its three ossicles, and the inner ear with the cochlea and semicircular canals. It is used to teach how sound is heard and how the ear senses balance.

Following Sound Through the Ear

A human ear model is always enlarged, because the middle and inner ear are small and hidden deep in the temporal bone. It follows sound along its path. The pinna collects sound waves and funnels them down the ear canal to the eardrum, which vibrates. In the air-filled middle ear, three tiny bones, the malleus, incus and stapes, pass those vibrations across to the oval window of the inner ear, concentrating the force from the large eardrum onto the much smaller window.

Inside the coiled cochlea, the vibrations set fluid moving, and hair cells along the basilar membrane convert the movement into nerve signals carried by the cochlear nerve to the brain. Different frequencies stimulate different parts of the coil: high pitches near the base and low pitches toward the tip. Loud noise can damage these hair cells, which do not regrow, and that makes the model a useful starting point for hearing-protection lessons.

The same inner ear contains the organs of balance: three semicircular canals at right angles to one another, which detect rotation of the head, and the utricle and saccule, which sense tilt and linear movement. The Eustachian tube, linking the middle ear to the throat, equalises air pressure, which is why ears pop in aircraft or on mountain roads. Whether this model separates into parts should be confirmed at enquiry.

Specifications

Applications

• Teaching the pathway of sound from the pinna to the cochlear nerve
• Explaining the organs of balance and motion sickness
• Hearing conservation lessons on noise damage to hair cells
• Audiology, nursing and speech therapy training on ear anatomy

Care & Handling

• Handle the human ear model by its base; the ossicles and semicircular canals are small and break easily if caught.
• If parts come out, work over a tray so the tiny ossicles are not lost.
• Dust with a soft brush and avoid wet cleaning of the delicate inner ear pieces.

Why Choose LabEquip

Biology teachers, audiology trainers and nursing colleges use an enlarged ear to show structures that cannot be seen in any other way. LabEquip lists it in its biology lab products, alongside the otoscope used to view the ear canal and eardrum in practice. Send enquiries through the LabEquip contact page.

Frequently Asked Questions

What are the three ossicles?

The malleus, incus and stapes, also called the hammer, anvil and stirrup. They carry vibrations from the eardrum to the oval window of the inner ear.

How does the cochlea detect different pitches?

Different parts of the basilar membrane vibrate most at different frequencies. High pitches stimulate hair cells near the base of the cochlea and low pitches those near its tip.

How does the ear help with balance?

The semicircular canals detect rotation of the head, and the utricle and saccule detect tilt and straight-line movement. The brain combines these signals with vision to keep us balanced.

Why do ears pop in an aircraft?

The Eustachian tube opens to let air in or out of the middle ear, equalising the pressure on both sides of the eardrum as the outside air pressure changes.

Why can loud noise cause permanent hearing loss?

Loud sound can damage the hair cells in the cochlea. Human hair cells do not regrow, so the hearing loss they cause is permanent.

What can be seen with an otoscope?

An otoscope shows the ear canal and the outer surface of the eardrum. The middle and inner ear lie beyond the eardrum, which is why students study them on a model.

Last Updated: September 2026