Which one of the following is NOT a mechanism that aids lymph return to the heart?
A) milking action of skeletal muscles
B) pressure changes within the thorax
C) the pumping action of the heart
D) smooth muscle contractions within the lymphatic vessels
E) presence of valves within the larger lymph vessels

Question

Quizplus · Accepted Answer

The pumping action of the heart does not aid lymph return. Contrarily, the heart pumps blood through the cardiovascular system, while the lymphatic system is a separate network of vessels and organs that works to return interstitial fluid and proteins to the bloodstream.

Which One of the Following Is NOT a Mechanism That