Which of the following is an example of a vector and the disease it spreads?
b. the deer tick and lyme disease
Answer:Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. The Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
