Final answer:
Gross anatomy is the study of large body structures visible without magnification, differentiated from microscopic anatomy that requires magnification devices.
Step-by-step explanation:
The study of the general form and superficial markings of an organism is called gross anatomy. Gross anatomy, also known as macroscopic anatomy, is the study of the larger structures of the body that are visible without the aid of magnification. This field contrasts with microscopic anatomy, which involves structures that can only be seen with the use of microscopes or other magnification devices and includes areas like cytology and histology.
In contrast to regional and systemic anatomy, which focus on specific regions or systems of the body, gross anatomy offers a broad view of the body's structures. It is a fundamental area of study in medical and biological sciences, providing necessary foundational knowledge for learners to understand how various parts of the body connect and function at a visible scale.