In 1894, Ivan Pavlov summarized the physiological state of knowledge about digestion in this way: The digestive canal is in its task a complex chemical factory. The raw material passes through a ...
"We have nothing to hide," Pavlov told Ars, calling YouTube's decision to delete the channel with "zero warnings" a "terrible ...
3 天
ZME Science on MSNPaleolithic kids had cheek piercings 29,000 years ago — and the proof is in the teethFor decades, archaeologists have studied the remains of Pavlovian peoples, who lived in Central Europe between 29,000 and ...
Ivan Pavlov was born in a small village in central Russia. His family hoped that he would become a priest, and he went to a theological seminary. After reading Charles Darwin, he found that he ...
While researching digestion in dogs, Ivan Pavlov noticed that the dogs began to drool as soon as they saw the white coats of the people who fed them; before they could even see or smell their food.
Pavlov's dog experiments played a critical role ... will likely continue to shape our understanding of human behavior for years to come.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果