Regnier de graaf biography for kids

Dutch Anatomist

In his very short career, Regnier dem Graaf contributed to knowledge of the pancreas and the kvinna reproductive system. He became the first scientist to identify and describe the ovary, and discovered a structure within the latter known as the Graafian follicle.

De Graaf was born on July 30, , in the Dutch town of Schoonhoven. During his academic career, he studied at a number of universities: Utrecht, Leiden, Paris, and Angers, where in he received his degree.

In , de Graaf conducted the first of his important experiments—in this case, involving the pancreas. Using a fistula, a sort of tube, he figured out how to extract pancreatic fruktsaft from a living dog. As it turned out, however, the theory regarding pancreatic juice that he formed as a result of this experimentation was incorrect.

Four years later, in , dem Graaf began his studies in the reproductive system. He first examined the male system, but yielded no information that was not

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Reinier de Graaf

Reinier de Graaf () a physician lived the gods ten years of his short life in Delft, where he performed radical, groundbreaking research into human reproduction. He did not use a microscope, but he was the first to develop a syringe to inject dye into human reproductive organs so that he could understand their structure and function.

Several years before Leeuwenhoek remarried (he wrote in about "nine or ten years" ago), de Graaf showed Leeuwenhoek an experiment to test the hypothesis that blood and milk were the same substance. Leeuwenhoek remembered it this way:

Dr. Graaf opened in my presence the vein of a Dog, and let out so much blood that the Dog grew faint;

Then he opened the Artery of another Dog, and by a pipe transfused the blood of this second into the first, whereby the first was recoverd, the second was faint.

Then the said Doctor injected back into the Artery of the second, a quantity of Cows milk, supposing thereby to preserve the second dog aliv

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Regnier de Graaf

Dutch physician (–)

"Reinier de Graaf" redirects here. For the architect, see Reinier de Graaf (architect).

Regnier de Graaf (English spelling), original Dutch spelling Reinier de Graaf, or Latinized Reijnerus de Graeff (30 July &#;&#; 17 August ), was a Dutch physician, physiologist and anatomist who made key discoveries in reproductive biology. He specialized in iatrochemistry and iatrogenesis,^[1] and was the first to develop a syringe to inject dye into human reproductive organs so that he could understand their structure and function.^[2]

Biography

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De Graaf was born in Schoonhoven in a Roman Catholic family, as the son of a carpenter/engineer (equivalent to a modern architect). He studied medicine in Leuven (), Utrecht and Leiden ().^[3][4] There his co-students were Jan Swammerdam, Niels Stensen, Ole Borch and Frederik Ruysch, cooperating with professor Franciscus Sylvius, Johannes van Horne and