What Is Comparative Physiology?

Comparative physiology is a branch of physiology that elucidates the similarities and differences in physiological functions between heterologous organisms or organs, and considers studying their systematic relationships. The research on the physiological processes of various animals, which has been staying for a long time as an auxiliary means of human physiology research, has initially become a science with independent personality in the form of comparative physiology. At the time, it was about the same as comparative genetics was created by J. Müller and his teacher K. A. Rudolphi in the early 19th century. The research results of the 19th century, after entering the 20th century, were combined by E. winterstein (1910--25) and A. Bethe (1925-32).