Which of the following statements regarding the flow of lymph from lower limb is true?

Normally. the fluid in lymph is massaged by muscle contractions of the organs and contraction of aerioles and venules, with which they are often associated which increases the flow through lymph vessels lacking valves and smooth muscle Thus by massaging foot lymph flow can be increased Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No: 550