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| 5 | White blood cells that play an important role in the body’s immune response (that is, in the body’s fight against germs and diseases). |   
| 7 | This lymphatic organ filters the blood and rhymes with teen. |   
| 8 | Its function is to discharge lymph and chyle into the blood through the left subclavian vein; it is also the largest lymph vessel in the body. |   
| 9 | Tiny thin-walled vessels that drain excess tissue fluids from around the cell ready to be filtered and returned to the venous circulation. |   
| 12 | A flexible tissue found in the interior of bones and produces blood cells. |   
| 13 | A type of lymphocyte that matures in the thymus gland. |   
| 14 | __________ __________ are tubular structures responsible for carrying lymph throughout the human body, much as blood vessels convey blood. |   
| 15 | One of the many anatomists who have helped increase the lymphatic system's knowledge and made the system what it is today. |   
| 17 | Cells and organs that make up the lymphatic system. |   
| 18 | The role of the ________ _________ is to process T-lymphocytes, that travel the body through the bloodstream. |   
| 19 | A system or network of cells, tissues, and organs that work together to defend the body against attacks by “foreign” invaders. |   
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| 1 | This includes: To balance bodily fluids, to defend the body from pathogens, and to ultimately help the digestive system. |   
| 2 | A colorless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream. |   
| 3 | A bodily fluid that consists of lymph and fat. |   
| 4 | These bean-shaped glands filter the lymph. |   
| 6 | This is the only place where the lymphatic system is not found. |   
| 10 | Lymph capillaries found in the villi of the small intestine. |   
| 11 | A type of lymphocyte that matures in the bone marrow. |   
| 16 | Cancers, infections, and ___________ are some of the many tragedies that the lymphatic system can cause. |   
| 20 | Two small masses of lymphoid tissue in the throat, one on each side of the root of the tongue. |   
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