There are no lymphatic arteries. Why isn't this a problem?

Which of the following is NOT a function of lymphatic vessels?

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. Lymph from the lower limbs drains into the right lymphatic duct.

After sitting for hours on a long flight where movement is limited, people may experience some swelling in their legs and feet. Which of the following explains this phenomenon?