The most important defense of the cardiovascular system against infection is ______.

Question

Quizplus · Accepted Answer

Lymphocytes in the blood, specifically T cells and B cells, play a crucial role in the immune response against infections. They identify and target infected cells and pathogens, leading to their elimination. While lymph nodes and fever also contribute to the immune response, lymphocytes in the blood are the primary defense mechanism in the cardiovascular system against infection. The blood-brain barrier primarily protects the brain from toxins and pathogens but is not directly involved in the cardiovascular system's immune response.

The Most Important Defense of the Cardiovascular System Against Infection