Anatomy of Humans or anthropotomy is a special field within anatomy that studies organs and organ systems of the human body, leaving the study of tissues to histology and cells to cytology. The human body is made up of systems, that are made up of organs, that are made up of tissues, that are made up of cells.

The endocrine system is a control system of ductless endocrine glands that secrete chemical messengers called hormones that circulate within the body via the bloodstream to affect distant organs. It does not include exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract.