blood can experience difficulty returning to the heart from legs. suggest two reasons for this.

Question

anonymous · Answer

Tree sets of vessels comprise the circulatory system: arteries, lymphatics, and veins. Arteries bring oxygen-carrying blood from the heart to the tissues. In the normal course of blood circulation, small amounts of fluid and protein leak from arteries and veins. Lymphatic vessels bring this protein-rich fluid back into the circulation. The third type of blood vessel is the vein.

1. the blood tissues provide a blockage in the veins causing it not to be able to get to the heart/legs

2. You have to finish your work. I'm sorry but I cant do it for you.