A vast and diverse science, physiology is divided into several branches:

• Human Physiology: Focuses on understanding the functions and processes of the human body
• Animal Physiology: Involves studying the mechanisms and functions of various animal species
• Plant Physiology: Involves the study of the functions and processes in different types of plants
• Endocrinology:Focuses on studying the mechanisms of the endocrine system and hormone regulation
• Cell Physiology:Focuses on understanding the mechanisms and functions of cells
• Neurophysiology:Involves the study of the functions and mechanisms of the nervous system and neurons 
• Molecular Physiology:Investigates the molecular mechanisms of genes, proteins, and cellular structures.