cof Factors related to lymph drainage Quantity: 120mW/h, 1/10 of interstitial fluid Smooth muscle contraction of vessel wall Valve of lymphatic vessel ◆ Arterial pulsation Contraction of neighbouring skeleton muscle Negative pressure of thoracic cavity If the lymph drainage is not good, result in swelling Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan UniversityCopy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Factors related to lymph drainage Quantity:120ml/h,1/10 of interstitial fluid Smooth muscle contraction of vessel wall Valve of lymphatic vessel Arterial pulsation Contraction of neighbouring skeleton muscle Negative pressure of thoracic cavity If the lymph drainage is not good,result in swelling