________ in Lymphatic Vessels and Trunks Prevent a Backflow of Blood

Question

________ in lymphatic vessels and trunks prevent a backflow of blood.
A)Increased pressure
B)Decreased pressure
C)Valves
D)Osmotic pressure

Accepted Answer

Valves are present in lymphatic vessels and trunks to prevent backflow of lymph. These valves open when lymph is moving forward and close when there is a tendency for lymph to backflow.