Anatomy studies the structure and spatial organization of organisms. It connects the shapes of organs, the arrangement of tissues and the geometry of individual biological cells to the functions studied in physiology. Dissection, imaging and histology reveal complementary scales of organization.
A useful anatomical explanation makes relations explicit: a nerve passes through a canal, a tendon crosses a joint, or a thin epithelium separates two exchanging fluids. These relations explain why the same region can contain structures with different functions and why damage at one location can affect several systems.[ref]
Anatomy and Physiology training modules by the National Cancer Institute. Introductory organization and body-system modules
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