Anatomy is the branch of biology that deals with the study of the structure of living organisms and their body parts. It is one of the oldest and most important branches of biological science. Anatomy helps us understand the form, organization, and relationship of different structures in the body, from tiny cells to large organs and organ systems.
Physiology is the branch of biology that studies how living organisms and their body parts function. It explains the physical and chemical processes that occur within cells, tissues, organs, and organ systems to maintain life. While anatomy focuses on the structure of the body, physiology focuses on function — how the body works.
Biochemistry is the branch of science that studies the chemical substances and chemical processes that occur within living organisms. It combines the principles of biology and chemistry to explain how living cells function at the molecular level. In simple terms, biochemistry helps us understand the chemical basis of life.