lymphatic system   |   The lymphatic, or lymphoid, system consists of tissues and organs designed to protect the body from damage by foreign materials. The ...

Lymph is a fluid that circulates through its own system in the body, playing an important role ...

Metastasis occurs when cancerous cells leave a tumor and travel through the bloodstream or lymphatic system to other parts of the body, where the cells come to rest and ...

• Circulatory System  

  Circulatory System   | All parts of the body must have nourishment and oxygen in order to function and grow. The circulatory system distributes needed materials and removes unneeded ones. The circulatory ...

• Immune System  

  The vessels of the lymphatic system provide a link between the body’s organs and specialized tissues of the immune system.  The first defense against ...

cardiovascular system   |   The human cardiovascular system is composed of the heart  and the blood vessels —arteries, veins, and capillaries. Its purpose is to ...

The article human anatomy describes the structure of the human body and provides an overview of each of its major body systems. For details on the individual body systems, see  ...

Epithelioma ,  |   cancerous growth or tumor...do they metastasize, or send cancerous cells through the body cavities, bloodstream, or lymphatic system to distant parts ...