physiology
nounUK /ˌfɪziˈɒlədʒi/
US /ˌfɪziˈɑːlədʒi/
Physiology is the study of how living things and their body parts work.
She wants to study physiology so she can understand how the heart and lungs work together.
OTHER MEANINGS
2. The way the body parts of a person, animal, or plant work together.
The physiology of a bird lets it breathe easily at high mountains.
3. The scientific study of the normal functions of living organisms and their parts.
He took a course in human physiology before going to medical school.
4. The physical and chemical processes that happen inside a living thing.
Exercise changes the physiology of your muscles over time.