Features. A parcel number may contain all or part of the real estate's tax account number with the local property taxing authorities. The numbers represent the physical location of the property, such as town, county and street, on the maps the assessor uses for property tax purposes.
1 Cancer. 2  If cancer cells block lymphatic vessels, lymphedema may result. 3  For instance, a tumor growing near a lymph node or lymph vessel could enlarge enough to block the flow of the lymph fluid. 4  Infection. 5  An infection of the lymph nodes or parasites can restrict the flow of lymph fluid.
I have to say that the above answer is totally incorrect Only (A) is true as lymph vessels are valveless. B and C are false. Lymph system does not carry blood. And is it not propelled by the heart but by the muscular contractions and movements of the body instead.. Lymph vessels have no valves, so there is a free flow of lymph fluid from the tissue spaces into blood stream and back again. B. One of the functions of the lymph is to drain deoxygenated blood from the tissues and return it to the heart. C. Lymph flow is propelled by the contraction of the heart.