The famous rooster Mike, who lived without a head for 18 months, is the result of improper cutting of the bird. The fact is that during the decapitation, Lloyd Olsen (Mike's owner) struck the blow incorrectly and cut off only part of the head. Due to the special location of the chicken brain in the head, most of the brain stem remained intact.
In 1946, Mike showed a rooster to scientists who thought it was a fairy tale.
So the bird itself continued to live, on which its owner earned (by the way, 4,500 dollars a month, which is comparable to 52,000 modern dollars).
Olsen with Mike< /p>
But we all know stories that a chicken after decapitation continues to live for some time. So where does this come from? And why does this only happen to chickens and not other animals like mammals?
Naturally, with the exception of the story of Mike, who was simply crippled, the chicken does not continue to live after being decapitated. Her muscles, controlled by neural networks in the spinal cord, continue to live for some time.
Moreover, this behavior is characteristic not only of chickens, but also of turtles.
The fact is that the neural network in their spinal cord is pre-programmed to direct the muscles in commonly used movement styles, such as running or swimming. supposed to kill them), jump towards the light from the window. And if something stands in their way, they bypass this obstacle.
If the same frog is placed in water, it will try to reach the surface, and if a jar is placed above it, when it is in water, it will dive down to get out of the jar and rise to the surface.
It all depends on which parts of the brain have been damaged. If parts of the brain (namely, the brainstem and medulla oblongata) are not completely destroyed, then the frog can still make many movements.
Cockroaches can live without a head. Cockroaches don't have blood pressure like humans do. They also do not have a huge network of blood vessels, but an open circulatory system with much less pressure.
When a cockroach loses its head (and this is not a metaphor), very often their neck tightens simply due to blood clots. So without a brain, the body can still function in terms of very simple reactions. And not only the body can survive decapitation. A lone head can also thrive by swinging its antennae back and forth for hours until it runs out of steam.
All of the above can be boiled down to the conclusion that these animals can exist for some time at the expense of special structure of the body. It is this feature that helps them. And its absence in mammals explains the fact why animals do not behave this way.