The Most Important Defense of the Cardiovascular System Against Infection

Question

The most important defense of the cardiovascular system against infection is ______.
A) the blood-brain barrier
B) lymph nodes
C) lymphocytes in the blood
D) fever

Accepted Answer

Lymphocytes in the blood are crucial for the immune response, acting directly against pathogens and infected cells, making them a key defense of the cardiovascular system against infection.