Listen to the functions of the human bloodstream with this enjoyable rap song. Learn how blood flows through the human circulatory system, transporting nutrients, oxygen, carbon dioxide, and metabolic wastes to their destinations. The rhyming lyrics and catchy beats describe the roles of the blood plasma, red bone marrow, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes) in an exciting and memorable way. Be sure to check out the corresponding BioL-O-Gee R.A.P. Bloodstream animated music video.