👉 Physiology is a branch of biology that deals with the study of living organisms, including their structure, function, and behavior. It focuses on understanding how cells, tissues, organs, and systems work together to maintain homeostasis (balance) in the body's internal environment. In physiology, scientists study various aspects of human health, such as cardiovascular disease, respiratory diseases, cancer, aging, neurodegenerative disorders, and infectious diseases. They also investigate how different organisms communicate with each other,