The anatomy of the underlying organ system or structures associated with this entity.

Specifying something physically contained by something else. Typically used here for the underlying anatomical structures, such as organs, that comprise the anatomical system.

The anatomical or organ system that this structure is part of.

The anatomical or organ system drained by this vessel; generally refers to a specific part of an organ.

Anatomical systems or structures that relate to the superficial anatomy.