Transports Essential Substances Around Your Body  Nutrients  Oxygen  Wastes Consists of Tissues & Organs  Heart  Blood Vessels  Blood

Two Main Pathways “Loops” Blood Traveling from the Heart to the Lungs & Back to the Heart Blood Traveling from the Heart to the Body & Back to the Heart

Body Cells Oxygen Carbon Dioxide Inhale Air Oxygen Absorbed Into Blood Blood Gives Up Carbon Dioxide Blood Gives Up Oxygen to Cells Cells Give Up Carbon Dioxide Wastes to Blood

Plasma Red Blood Cells White Blood Cells Platelets Mixture of Liquid Plasma, Cells, & Cell Fragments

 Carry Oxygen  Contains Hemoglobin (protein)  Large Surface Area (Erythrocytes)  99 % Blood Cells

(Leukocytes)  5 – 10 thousand / mm3 blood  Fight Infections / Immunity  Includes Macrophages T- Cells, & B - Cells

 Cell Fragments  Repair Damaged Blood Vessels  Responsible for Blood Clotting

 Mixture of Water With Dissolved Substances  Carries Many Things  Liquid Portion of Blood Hormones Amino Acids Lipids Glucose Vitamins & Minerals Carbon Dioxide  Helps Distribute Body Heat

(Arterioles) (Venules)

 Carry Blood Away From Heart  Thick Elastic Walls Expand for Surge of Blood  Can Withstand High Blood Pressure  Carry Blood To Heart  Thinner Walls & Lower Blood Pressure  Valves Prevent Backflow of Blood

Aorta Pulmonary Artery Cornary Artery Carotid Artery Renal Artery Heptatic-Portal Artery Pulmonary Vein Coronary Vein Heptatic-Portal Vein Renal Vein Jugular Vein Inferior & Superior Vena Cavae

Aorta Pulmonary Arteries Left Atrium Bicuspid Valve Left Ventricle Superior Vena Cava Right Atrium Tricuspid Valve Right Ventricle Septum Aortic Valve Pulmonary Valve Pulmonary Veins

Label the Following Structures Right ventricle Left ventricle Right atrium Left atrium Pulmonary arteries Pulmonary veins Aorta Superior vena cava Inferior vena cava Semi-lunar valves Bicuspid valve Tricuspid valve Cardiac muscle Pericardium Septum Color in oxygenated blood red & de-oxygenated blood blue Draw arrows showing blood flow Through the heart & adjacent Blood vessels Indicate the location of the lungs