What is the study of large, observable structures called?

The study of large, observable structures is known as gross anatomy. This branch of anatomy focuses on the macroscopic aspects of organisms, which can be seen without the aid of a microscope. Gross anatomy encompasses the examination of the body's systems, organs, and tissues as they can be directly observed and palpated. By exploring structures such as the heart, lungs, and muscles in their accessible forms, gross anatomy provides foundational insights into the relationship between these components and their functions within the living organism.

It is distinct from microscopic anatomy, which deals with structures that require magnification to be seen, such as cells and tissues. Regional anatomy focuses on specific areas of the body, examining all structures within that area, while system anatomy looks at the various systems of the body, such as the cardiovascular or nervous systems. However, the term "gross anatomy" broadly covers the study of sizeable anatomical features as a whole.