A Patient Has Sprained Her Knee in a Game of Basketball

Multiple Choice

A patient has sprained her knee in a game of basketball and presents with swelling and pain. Which of the following statements best describes why the swelling occurs?

A) Leukotrienes make blood vessels more permeable, leading to the delivery of immune system cells to the damaged tissue.
B) Broken blood vessels bleed into the injured area, making it swell.
C) The increase in temperature by prostaglandins results in increased blood flow to the area.
D) Thromboxanes isolate the injured tissue, resulting in swelling.
E) All of the above