Medically reviewed by Michael Menna, DO Key Takeaways The circulatory system carries oxygen and nutrients throughout the body and removes waste.The lymphatic system helps fight disease by creating and ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

The human body is a wonderous thing, especially when you consider how intricate and efficient each bodily system is. For instance, an adult’s blood vessels could encircle the earth 2.5 times if ...

University of Manchester provides funding as a member of The Conversation UK. The average body contains about 37 trillion cells – and we are in the midst of a revolutionary quest to understand what ...