3B Scientific - Biology Catalog
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Ear, 3 times life size, 4 part<br />
Representation of outer, middle<br />
and inner ear. Removable eardrum<br />
with hammer, anvil and stirrup as<br />
well as 2-part labyrinth with cochlea<br />
and auditory /balance nerve.<br />
On base.<br />
34x16x19 cm; 1.25 kg<br />
L/E/D/S/F/P/I/J www.<br />
9982-1000250<br />
Sensory Organs<br />
9982-1000250<br />
Organ of Corti<br />
The model shows a three dimensional section through the organ of Corti,<br />
the site of the sense of hearing in the inner ear in humans. Special attention<br />
has been given to the detailed representation of the individual cellular<br />
components and membranes. The overview model in the foreground<br />
also shows the exact location of the organ in the cochlea.<br />
26x19x26 cm, 1.0 kg<br />
& L/E/D/S/F/P/I/J<br />
9982-1010005<br />
9982-1010005<br />
9982-1000253<br />
Life size Auditory Ossicles<br />
The human auditory ossicles, both<br />
individually and connected in natural<br />
position, embedded in transparent<br />
plastic.<br />
9982-1000253<br />
Desktop Ear Model,<br />
1.5 times enlarged<br />
Representation of the outer,<br />
middle, and inner ear. On base.<br />
14x10x14.7 cm; 0.35 kg<br />
L/E/D/S/F/P/I/J www.<br />
9982-1000252<br />
9982-1000252<br />
Anatomical Model Human<br />
Pressure equalisation in the middle ear<br />
Functional model according to Bischof. This functional model shows the<br />
pressure equalising mechanism of the middle ear via the auditory tube. If<br />
there is a change in pressure in the tympanic cavity – for example if there<br />
is a rapid change in altitude – the eardrum curves outwards or inwards.<br />
The Eustachian tube equalizes the pressure with the help of the mechanical<br />
swallowing process. In the model, the bulging out or denting in of the<br />
eardrum and the subsequent equalisation of the pressure are demonstrated.<br />
Delivered with replacement membrane and teachers’ manual.<br />
16x13x12 cm, 0.2 kg<br />
& D/E<br />
9982-1012829<br />
9982-1005052<br />
Functional Ear Model<br />
This model shows how the tympanic membrane, ossicles, the complex<br />
internal ear with the cochlea and the oscillations of the basilar hearing<br />
membrane operate/interact. The enclosed mirror enables operation of<br />
the model for the studying of various ear functions from different angles<br />
at the same time. One single model may be studied by several students<br />
simultaneously in an action oriented learning situation. Includes a four<br />
colour explanatory chart.<br />
30x20x15 cm; 1.0 kg<br />
E<br />
9982-1005052<br />
38<br />
<strong>3B</strong> <strong>Scientific</strong>® <strong>Biology</strong>
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