BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Tissue fluid would flow backwards, potentially causing edema, or tissue fluid build-up
|
|
|
It would have no effect, because muscle action would still keep fluid flowing
|
|
|
There are no valves in the lymphatic vessels
|
|
|
Tissue fluid would flow too quickly, causing a heart attack due to the increased fluid flow to the heart
|
Detailed explanation-1: -Without valves, the lymphatic system would be unable to function without a central pump. Smooth muscle contractions only cause small changes in pressure and volume within the lumen of the lymph vessels, so the fluid would just move backwards when the pressure dropped.
Detailed explanation-2: -This is important because water, proteins, and other substances are always leaking out of tiny blood capillaries into the body tissues around them. If the lymphatic system didn’t drain it, this extra fluid would build up in the tissues and make them swell.
Detailed explanation-3: -If our lymphatic system were not present in our body, we would not be able to drain the excess fluid, so our tissues would swell due to the accumulation of fluids and cells would literally drown, or become stagnant in the accumulated fluid and it would become the breeding grounds for infection.
Detailed explanation-4: -The primary function of lymphatic vasculature is to maintain interstitial fluid homeostasis. Lymphatic vessels absorb fluids that extravasate from blood vessels and return them to blood circulation. In addition, lymphatic vessels absorb digested lipids from the intestine and regulate inflammation.