Lymph is the colorless fluid that surrounds the cells that circulates through the lymphatic system. Lymph is formed from the absorbed fluids from cells in the capillary beds.The formation starts "when the arterial blood reaches the arterial capillaries, most of it flows into the venous capillaries, but about 10% of the blood plasma escapes the capillaries and forms the interstitial fluid around the cells" . The fluid around the cells then enter the lymphatic capillaries and it becomes the lymph. The lymph is usually a clear fluid but can be a slightly yellow color. It is made up of 96% water, lymphocytes, minerals, proteins, lipids, and products of the cell metabolism. Lymph only flows in one direction, it only flows from the tissues but it never flows in from the venous blood to the tissues, this is because the vavles prevent lymph from flowing in the other direction (backwards). The important function of the lymph is it destroys any cancerous or dangerous cells that are within the body. It also has a function of transporting excessive intersitial fluid back to blood circulation. The lymphatic vessels are where the lymph drains and these vessels form one of the two large vessel called lymphatic trunks. Out of these two trunks, the right duct drains the upper right portion which returns the lymph to the bloodstream. The other trunk is called the thoarcic duct. The thoaracic duct drains the rest into the left subclavin vein. Contractions of the muscles are what helps transports the lymph. The lymphatic vessels oftenly have lymph nodes, which are fromed by masses of lymph tissue. Many of us know this to be in the neck right under our jaw line, they tend to be sore and swallon-like. These lymph nodes are visible when the body is fighting off a sickness. The neck isn't the only place lymph nodes from, they are also commonly found in the armpit and groin area but can be found throughout the body.    citation:  "What is Lymph:Defintion, Formation, Compostition, Flow, Circulation| EHealthStar." EHealthStar|Evidence Based Heatlh Article, 9 Nov. 2016, www.ehealthstar.com/anatomy/lymph.

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