Ivan Petrovich Pavlov was a Russian and Soviet experimental neurologist and physiologist known for his discovery of classical conditioning through his experiments with dogs.
Pavlov in 1890
The Pavlov Memorial Museum in Ryazan, Pavlov's former home, built in the early 19th century
Pavlov and his future wife, Seraphima Vasilievna, in 1880
A 1935 portrait of Pavlov by Mikhail Nesterov
Physiology is the scientific study of functions and mechanisms in a living system. As a subdiscipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out chemical and physical functions in a living system. According to the classes of organisms, the field can be divided into medical physiology, animal physiology, plant physiology, cell physiology, and comparative physiology.
Oil painting depicting Claude Bernard, the father of modern physiology, with his pupils