By what means is lymph fluid pushed forward through the lymph vessels?
A) A central pump dedicated to the lymphatic system
B) A system of valves in the lymph vessels
C) The contractions of skeletal muscles and movements of breathing
D) The heart,which circulates both blood and lymph

Question

By what means is lymph fluid pushed forward through the lymph vessels?​
A) ​A central pump dedicated to the lymphatic system
B) ​A system of valves in the lymph vessels
C) ​The contractions of skeletal muscles and movements of breathing
D) ​The heart,which circulates both blood and lymph

Quizplus · Accepted Answer

Lymph fluid is pushed forward through the lymph vessels by the contraction of skeletal muscles and movements of breathing. There is no central pump dedicated to the lymphatic system and there are valves in the lymph vessels, but they serve to prevent backflow rather than push the fluid forward. The heart circulates blood, but not lymph.

By What Means Is Lymph Fluid Pushed Forward Through the Lymph