Innerbody Research is the largest home health and wellness guide online, helping over one million visitors each month learn about health products and services. Their mission is to provide objective, science-based advice to help you make more informed choices.

Their website includes detailed images and textual explanations of the following systems in the human body: skeletal, muscular, cardiovascular, digestive, endocrine, nervous, respiratory, immune/lymphatic, urinary, female reproductive, male reproductive, and integumentary.

MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). The mission of MedlinePlus is to present high-quality, relevant health and wellness information that is trusted, easy to understand, and free of advertising, in both English and Spanish. Anywhere, anytime, on any device—for free.

The MedlinePlus Anatomy page provides links to information about the structure of the human body available on the websites of the National Institutes of Health and other federal government agencies. MedlinePlus also links to anatomy information from non-government websites.