9. How do the circulatory system and immune system work together to respond to an injury?
A. Increased blood flow kills healthy cells which prevents infection at the site of the injury.
B. Increased blood flow removes infected cells from the body at the site of the injury.
C. Increased blood flow carries white blood cells to the site of the injury.
D. Increased blood flow allows for an increase in the exchange of O2 and CO2 at the site of the
injury.
