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