construction of this sentence is correct?
observing structure of the human anatomy has a long history of science, but there is always a question how the man during standing, walking or running gets required energy and uses it.

Question

Answer

Observing the structure of the human anatomy have been a part of the long history of science. However, there is always a question about how a human being obtains energy and uses it whilst standing, walking or running.

You could use 'But' instead of 'However' but 'However' is more formal for this kind of writing. Hope it helps :)

Evden çıkmadan dil öğrenme fırsatını kaçırmayın. Deneyimli dil eğitmenlerimizden oluşan seçkimize göz atın ve ilk dersinize şimdi kaydolun!