1) Thick tissue wall that separates the left and right sides of the heart a) Septum b) valve c) ventricles 2) lower chambers of the heart a) Septum b) valve c) ventricles 3) thin flap of tissue that acts like a one-way door a) Septum b) valve c) ventricles 4) blood vessels that carry blood to the heart a) capillaries b) artery c) veins 5) blood vessels that carry blood away from the heart a) capillaries b) artery c) veins 6) blood vessels that connect the arteries to the veins a) capillaries b) artery c) veins 7) Cells that give blood its red color and carry oxygen a) red blood cells b) white blood cells c) platelets 8) Cells that protect the body from disease a) red blood cells b) white blood cells c) platelets 9) tiny, colorless pieces of cells that help blood to clot. a) red blood cells b) white blood cells c) platelets 10) liquid part of the blood a) red blood cells b) plasma c) platelets 11) chambers of the heart a) atrium b) ventricles

Circulatory System

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