Sophia Human Biology

— Cardiovascular System Understand the system of blood vessels. What vessels carry blood away from the heart? • a.) Veins • b.) Atria • c.) Arteries • d.) Venules 2 — Heart and Blood Flow Identify the major structures of the heart and the specific role in the overall functioning of the heart. Which of the following describes the atrium? • a.) The thick wall that divides the heart in half • b.) The upper chamber of each half of the heart • c.) The lower chamber of ...