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Welcome to InnerBody.com, your online guide to the anatomy and physiology of the human body. Study diagrams, internal organs, body parts and systems.

In-depth information on back pain, neck pain, lower back pain, sciatica and more, including articles, videos, forums and physician interviews.

YouTube is a place to discover, watch, upload and share videos.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world

Bartleby.com publishes thousands of free online classics of reference, literature and nonfiction

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Prescription drug information and news for professionals and consumers. Search our drug database for comprehensive prescription and patient information on 24,000 drugs online

Foundation for the Advancement of Mesoamerican Studies, Inc., provides various research databases containing drawings and photographs, as well as bibliographies.

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Read doctor-produced health and medical information written for you to make informed decisions about your health concerns.

Trusted medical information to encourage healthy living. Enjoy free health tools and view detailed doctor-reviewed information about diseases, medical symptoms, treatments, drugs, and nutrition.