AIM: What are the structures and functions of the circulatory system? DO NOW: How is the structure of a nephron related to its function? What are the only two options for a person with kidney failure? Circulation vocabulary: vein, capillary, artery, atrium, ventricle, valve, aorta, pulmonary circulation, systemic circulation, RBC, WBC, platelet Have out HW pg 993 questions 1-12 and Test tomorrow: Digestion and Excretion

Figure 37-5 The Three Types of Blood Vessels Capillary Connective tissue Smooth muscle Endothelium Valve Venule Endothelium Arteriole Vein Artery Blood Vessels

Figure 37-2 The Circulatory System Capillaries of head and arms Capillaries of abdominal organs and legs Inferior vena cava Pulmonary vein Capillaries of right lung Superior vena cava Aorta Pulmonary artery Capillaries of left lung Pulmonary and Systemic Circulation

Blood Red blood cells – Oxygen carriers – Hemoglobin White blood cells – Immune responses Platelets – Blood clotting