Colleen Works in Retail and Is Typically on Her Feet

Multiple Choice

Colleen works in retail and is typically on her feet most of each of her 8-hour shifts. When she gets home, she complains about how swollen her feet and ankles are. Why does elevating her feet help to relieve the swelling?

A) Gravity assists the flow of lymph from the lower extremities back toward the trunk.
B) The increased blood flow to the elevated feet will help "wash" away the accumulated fluid.
C) The increased blood pressure in the elevated feet will reduce the formation of tissue fluid.
D) As blood pressure is reduced in the feet and ankles, more fluid is pushed from the circulation out into the tissues, causing more lymph formation.