3B Scientific - Biology Catalog
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Nerves of Steel – Great experiments for simulating the conduction of impulses along<br />
nerve fibres according to Prof. Dr. Matthias Ducci / Prof. Dr. Marco Oetken<br />
Exciting experiments for interdisciplinary teaching of year 11 to 13 classes. A model system for simulating the conduction of impulses<br />
is now finally available! Many biology teachers have complained about the lack of suitable model systems for simulating<br />
the conduction of impulses along nerve fibres, considering that neurophysiology is an established component of the advanced<br />
level syllabus. We have developed a unique electrochemical model experiment for effective illustration of this complex topic, in<br />
cooperation with Prof. Dr. Matthias Ducci (teacher training college PH Karlsruhe) and Prof. Dr. Marco Oetken (teacher training college<br />
PH Freiburg). Try it – you’ll love it!<br />
Experiments Nervous System Physiology<br />
Prof. Dr. Matthias Ducci<br />
Starting position of the simulation of salutatory conduction<br />
The zinc electrode is put into the electrolytic solution<br />
After the zinc electrode contacts the iron rod a reaction can<br />
be seen through the bubbles which represents the conduction<br />
of impulses of nerve fibres<br />
Nerves of Steel<br />
The model experiments are based on the property of iron to develop a protective<br />
oxide coating in acid solutions under specific conditions. This impressive<br />
analogical model is based on the reversibility of the process of<br />
passivation and the appearance of a reactivation along a long iron rod.<br />
The materials provided allow the students to use the model to demonstrate<br />
continuous and saltatory conduction as well as the principle of transmission<br />
of neurotransmitters.<br />
The following experiments can be carried out:<br />
• Simulation of continuous conduction along non-myelinated axons<br />
• Simulation of salutatory conduction by means of a model experiment<br />
• Transmission of information by neurotransmitters<br />
Scope of delivery:<br />
1 Plexiglas trough,<br />
sand paper,<br />
3 iron rods,<br />
1 zinc electrode,<br />
15 jackets for isolation of sections of the iron rod, detailed experimental<br />
instructions.<br />
The required chemicals (hydrogen peroxide, sulphuric acid, sodium<br />
chloride solution) are not included.<br />
12x12x35 cm; 0.5 kg<br />
& D/E<br />
9982-1000538<br />
Unique<br />
electrochemical<br />
model experiment<br />
9982-1000538<br />
132<br />
<strong>3B</strong> <strong>Scientific</strong>® <strong>Biology</strong>
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