Question

He began thinking about the valves his teacher, fabric, had discovered in the leg veins ​

Answer 1

Answer:

Fabricius, his teacher in Padua, had discovered the valves in the veins. ... This occurs in such an amount, with such an outflow through the arteries and such a reflux through the veins, that it cannot be supplied by the food consumed. It is also much more than is needed for nutrition.

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