Microanatomy is the study of the microscopic structure of tissues and organs, and it forms a fundamental basis for understanding the functioning of these structures. Some synonyms for microanatomy include histology, cytology, and cell biology. Histology is the study of the microscopic structure of tissues, while cytology is the study of the structure and function of cells. Cell biology is the study of the structure, function, and behavior of cells, including their interactions with one another and with their environment. Additionally, ultrastructure and subcellular anatomy are closely related terms that refer to the study of the intricate details of cellular organization, such as organelles and membrane systems.