In addition to these vastly different systems, the heart, brain, lungs, and other individual organs that seem to be functionally similar to those of the human body in previous lives are also very different in structure.

The heart, for example, has eight chambers, two of which form the cardiopulmonary circulation between the heart and lungs, four to support the body's general circulation, and the other two to communicate with the epidemic system to form the heart circulation.

There are also lungs, and beneath the huge double lobes involved in breathing, two more hidden lungs that appear to have degenerated have been found.

Upon further observation, the witch doctors discovered a very special organizational structure within it, and at one point nearly overturned the name "Hidden Lung".

The hidden lung is only one-thousandth the size of a normal lobe, and has a large number of densely packed, punctate bulges on the surface.

Under the observation of a low-powered microscope, the witch doctors found that these 'bulges' were actually traces of degeneration of blood vessels and other channels.

And made a rough judgment of size based on the number, thinking that it should have been an extremely important organ at one time.

After that, the witch doctors cut out a little bit of material in each part of the hidden lung body and put it under a medium and high magnification microscope for observation.

This time, there was a new discovery immediately.

Almost all the cells in the lungs are in a semi-dormant state of extreme contraction.

The witch doctors tried many methods to activate the dormant cells, but they all failed.

These cells maintain minimal communication with the rest of the body's circulatory structures through capillaries.

Through this connection, they barely survive on the exhaust gases that should have been excreted from their bodies.

This discovery inspired the witch doctors in the research group, and proposed the hypothesis that 'troll life may have originated in areas where there is no normal air).

Later, combined with the various differences between the troll body and other creatures, the hypothesis that the troll originated from volcanic magma was further established.

They believe that the trolls were originally born as a special kind of life in a volcanic lava lake, and after a long evolution, they gradually climbed the 'shore' and became what they are today.

This hypothesis is accepted by most witch doctors, as they have found a certain amount of fire resistance when they look at the cells of any tissue in the body.

Usually the cells closer to the outer wall of the tissue, such as the skin on the body surface, the mucosa on the inner wall of the oral digestive tract, hair, etc.;

Or there is a chance of coming into contact with the inside of the organs of external substances, such as the lung cavity.... All retain extremely strong fire resistance.

For the rest of the cells, although the fire resistance has degraded to varying degrees, it still retains the minimum traces.

For example, when a troll has a limb severed, the flames will cause damage to the muscles and blood in the wound, and in severe cases, it will even cause necrosis, and it can only be regenerated after removing the corresponding part.

However, this damage is still not severe enough compared to how other creatures react to fire, so it is also a remnant of fire resistance.

These observations have become an important support for the "volcanic origin theory".

In addition, there is a very peculiar manifestation of the fire resistance of trolls, that is, it is only reflected in living organisms;

When a troll dies, it loses this ability at an extremely rapid rate, giving it the ability to be cremated.

If this property had already appeared in the 'volcanic period', it would undoubtedly be a problem for Shuoyuan's work, because there may not be any fossils left before and after that period.

Of course, the focus of this research is not 'archaeology', and the witch doctors are not too involved in this conjecture, but more as a kind of talk during their breaks.

To get back to the point, when the other groups had already submitted their interim reports several times, the witch doctors in the brain group were shy enough to hand in their first results.

The content is the brain distinction that they have just gone through a lot of painstaking work to complete.

In terms of experimental methods, the brain group chose the scheme of 'dissecting on the dead body and determining it on the living body'.

They first made a structural distinction between the brains by dissecting the cadavers, and preliminarily divided the forebrain, midbrain, hindbrain, medulla oblongata at the center, and their respective derivative structures.

Among them, the forebrain proliferates anteriorly and upwards to form the telencephalon; The midbrain proliferates on the image to form the parietal brain; The hindbrain proliferates posteriorly and upward, forming the posterior parietal cover.

Of course, this is only the largest division, and each part can actually continue to be further distinguished, such as various small tissues that are structurally independent, but their specific properties cannot be detected at all.

When judging the function of the brain area, the witch doctors adopted the method of limiting the senses and local anesthesia, and through the two-way manipulation of the body's sensory system and the brain region, the purpose of understanding the function of each area was initially achieved.

For example, the anterior parietal cover deals with vision and smell, the lateral brain processes hearing, and the posterior parietal covers control the motor system.....

And made the judgment that 'when the troll was originally a hearing creature), and gave the relevant evidence.

The first is the parietal brain, which is an extension of the midbrain, and is almost the most developed primary sensory processing center of the brain today.

In addition, from a functional point of view, the anterior brain, which has the 'summary' function of 'sight and smell', should have the advantage of 'sensory center' competition;

In reality, however, this function was taken over by the midbrain, which is only responsible for the 'auditory information aggregation center', and has become the general base for all the 'senses' of the trolls today.

This result, which is close to 1 being greater than 2, is undoubtedly the contribution of the troll's first-mover advantage in hearing, making the forebrain a 'working boy' in the midbrain.

Not only that, but the midbrain also forms a 'motor response' connection with the posterior parietal cover, taking over the function of 'allowing movement', allowing the hindbrain to obediently shrink at the bottom of the brain, and is only responsible for the operation of some 'inactive muscle groups', as well as some other basic functions that are not yet understood.

Blade Fang thought about it carefully and found that this kind of clue could be faintly felt in life.

First of all, the troll's hearing is indeed extremely developed, he used to think that it was an adaptation to the dim forest environment, but he did not expect to hide the 'first-mover' advantage of hearing;

Secondly, does 'hearing' seem to be more pleasing to the eyes than sight and smell? In bed, for example, sound is more satisfying than body.....

Maybe it's related, maybe it's not related, these kinds of ideas may just be a subjective misjudgment of the blade, and cannot be used as a real basis.

Moreover, the research group's methods of brain research are still too crude, and the information and conclusions obtained are mixed with too many guesses and associations.

Therefore, the facts will have to be left to the future to make further judgments.