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