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Can now be set forth those wonderfulthe facts necessary by way of introduction to whom is this description of educationlayers. From the outer layer, or epiblast develops a constant epidermis andits derivatives - nervous system and sense organs. Converted insidelayer, or gipoblasta develop peoplemy channel and those adjacent toit bodies, such as the liver, pancreas and othersparticipate in digestion, delivering its offices in peoplemychannel, and finally the shell distributed in the lung tubes, conductivethe air to the places where is gas exchange. From mesoblastformed bone, muscle, heart, blood and lymphatic vessels togetherwith such parts of various internal organs, which are the leastin contact with the visible world. If you tolerate minor limitstill, of course, broad and General conclusion from the partthe outer layer, which remains a long time exposed, developall structures actively and passively supporting the intercourse with the environment and itscontent; from facing the same inside of this outer layer developsthe structures that support communication from entering the inside of the bodyquasiвнешними bodies like solid food, water and air; and finally, frommesoblast develop structure, never having from the beginning to the endno intercourse with the outside world. Consider these General facts. Who would suggest that the nervous system is the part of the originalof epidermis? Without evidence, represented the unanimous testimonyembryologists during the last thirty or forty years, who would believe thatthe brain comes from curled up strips of outer skin, which, fallingbelow the surface, immersed in the fabric and finally clothingbone case? However, human nervous system, along withnervous systems of lower animals is exactly the origin.
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