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home > Giant Three-Part Ear Model > Giant Three-Part Ear Model

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Giant Three-Part Ear ModelDwarfs ordinary ear models and demonstrates equilibrium with liquid filled canals. 5 times life size, this unbreakable polymer reproduction depicts the human organ of hearing and balance. Sagittally sectioned along the length of the auditory canal and Eustachian tube, it is easy to trace the path of sound waves entering the ear, and it becomes clear how pressure is equalized on both sides of the eardrum. The entire middle ear chamber and the labyrinth

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Dwarfs ordinary ear models and demonstrates equilibrium with liquid-filled canals. 5 times life-size, this unbreakable polymer reproduction depicts the human organ of hearing and balance. Sagittally sectioned along the length of the auditory canal and Eustachian tube, it is easy to trace the path of sound waves entering the ear, and it becomes clear how pressure is equalized on both sides of the eardrum.

The entire middle ear chamber and the labyrinth is exposed to view. The malleus (hammer) and incus (anvil), and the attached see-through tympanic membrane lift out, as well as the entire labyrinth unit, for hands-on study. Two of the three semicircular canals are made of transparent tubing filled with colored fluid representing the endolymph. An air bubble in each will shift position when tilted, demonstrating the function of the canals in maintaining equilibrium. A spiral cutaway of the cochlea shows its three canals in contrasting colors to teach the concept of pitch.

36 hand-numbered features are identified in the accompanying key.

16x11x7 inches (41x28x18 cm).

Auricle (pinna)
Cartilage and skin
External auditory canal
Wax-producing glands
Earlobe
Cartilage of external auditory meatus
Temporal bone
Styloid process
Tympanic (fibrocartilaginous) ring
Tympanic membrane (eardrum)

Auditory Ossicles:

Incus (anvil)
Malleus (hammer)
Stapes (stirrup)
Anterior ligament of malleus
Posterior ligament of incus
Tensor tympani muscle
Stapedius muscle
Tympanic cavity
Eustachian tube
Anterior semicircular canal
Ampulla of superior canal
Posterior semicircular canal
Ampulla of posterior canal
Lateral semicircular canal
Ampulla of lateral canal
Vestibule
Oval window located under stapes (vestibular window)
Round window (cochlear window)
Cochlea, first turn

Scala vestibuli (orange) Scala media (white) Scala tympani (blue)

Cochlea, second turn
Cupula
Vestibular nerve (Cranial Nerve VIII)
Cochlear nerve (Cranial Nerve VIII)
Facial nerve (Cranial Nerve VII)
Internal carotid artery
Cartilaginous portion of Eustachian tube

Giant Three-Part Ear Model

Name: Giant Three-Part Ear Model
Brand: sudoshz.ir
SKU: 73196410668
Price: 157.47 USD
Availability: InStock
Rating: 4.0036 (1047 reviews)