− | Lymph is formed by the filtration of interstitial (tissue) fluid into [[Lymphatic Vessels - Anatomy & Physiology#Structure|lymphatic capillaries]]. As fluid enters the tissue space from the blood stream pressure builds up in this space and as this hydrostatic pressure increases it causes the interstitial fluid to diffuse into the [[Lymphatic Vessels - Anatomy & Physiology#Structure|lymphatic capillaries]] once the interstitial fluid has entered the lymphatic capillaries it is called lymph. | + | Lymph is formed by the filtration of interstitial (tissue) fluid into [[Lymphatic Vessels - Anatomy & Physiology#Structure|lymphatic capillaries]]. As fluid enters the tissue space from the blood stream, pressure builds up in this space and as this hydrostatic pressure increases it causes the interstitial fluid to diffuse into the [[Lymphatic Vessels - Anatomy & Physiology#Structure|lymphatic capillaries]] once the interstitial fluid has entered the lymphatic capillaries it is called lymph. |