Bioelements and Biomolecules
You are what you eat. But do you remember munching some molybdenum or snacking on selenium? Some 60 chemical elements are found in the body, but what all of them are doing there is still unknown.
The biomolecules and their roles in an easy-to-understand language.
Excellent and easy to follow visual activity to learn the basics on animal, plant and bacterial cells.
Take an interactive look inside an animal and a plant cell.
Awesome zoomable visualization to help you get an idea of the actual sizes of cells and their components.
To learn everything you need about the parts and the organelles of a cell in an easy-to-understand language.
Lots of info and images on the cells and their organelles.
Article at Wikipedia containing a list of links to the corresponding articles of a great number of types of human cells.
Debunking the idea that our bodies are renewed every seven years: learn what is the real life span of several types of human cells.
Organs, Systems and Apparatuses
On Zygote Body you can view the underlying anatomical layers one by one using a slider, switch on labels to identify each body part, use the search box as a search engine for any body part (muscles, organs, bones etc), and what's more, you can also share the exact scene you are viewing by copying and pasting the URL. As of writing this, the website will only work in Firefox and Chrome browsers.
The BBC's webpage is a resource rich place to discover and play interactive games while learning all about the human body. The games include Senses challenge, Organs Game, Skeleton Game, Muscle Game and Nervous System Game. The games are superbly designed and mostly involve dropping a body part onto a human figure.
This one is not a fully fledged anatomical course, but a cool and short 10 question quiz on different body parts. It is a Smithsonian National Museum of Natural History resource. With a mouse rollover you have to match the thumbnail with its location on the skeletal structure named 'Jerome'. You can also turn Jerome around for another view.
Visually learn about the human body using interactive flash animations.
Not that much, but a set of ten not-so-easy questions to test your knowledge on the human body.
View the inner structure of a hair, progressively magnified.
View the inner structure of a tooth, progressively magnified.
The Bartleby.com edition of Gray's Anatomy of the Human Body features 1,247 vibrant engravings—many in color—from the classic 1918 publication, as well as a subject index with 13,000 entries.