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Do NOW: PRE-TEST: HOMEWORK: TEXTBOOK PAGES 582-589 Q’S 1-5 DO NOW: The Pre-test 1) Identify and interpret the functions of the circulatory system. 2) Compare and contrasts veins and arteries. 3) The level of CO2 in the blood affects breathing rate. How would you expect high levels of CO2 to affect the heart? The process in which cellular materials are distributed (moved) and absorbed (taken in) throughout the organism Examples of Cellular Materials Water Nutrients Oxygen Carbon Dioxide Wastes A circulatory system •Heart •Blood •Blood vessels Organ of the Human Circulatory system Made of cardiac muscle Responsible for pumping blood through the circulatory system. •Liquid component of circulatory system •Present in the blood vessels •Carries cellular materials throughout the body •Contains plasma, blood cells, and platelets Tubes in the body that are used to hold the blood Pressure is applied to blood vessels to cause the blood to move 1. Veins 2. Arteries 3. Capillaries •Is a thin of blood vessel that contains valves •Carries blood TO the heart •Is a thick blood vessel •Carries blood AWAY from the heart •Smallest blood vessels (Microscopic) •One cell “thick” (very thin) •Where cellular materials are exchanged ex.) lungs – alveoli Small intesine - villi CHECKING YOUR PULSE RATE The heart speeds up when the blood volume reaching your atrium increases. It also speeds up when you exercise. The number of heart beats per minute is your heart rate, which can be measured by your pulse. 1. Why is your pulse a means to indirectly measure heart rate? 2. Use values from your pulse rate (resting and after exercise) to describe the change in your pulse rate. 1. CORONARY CIRCULATION ANY BLOOD FLOW GOING TO OR FROM THE HEART 2. PULMONARY CIRCULATION ANY BLOOD FLOW GOING TO OR FROM THE LUNGS 3. SYSTEMIC CIRCULATION ANY BLOOD FLOW GOING TO OR FROM BODY PARTS OTHER THAN THE HEART AND LUNGS Summary The diagrams show various organ systems. Cardiovascular diseases interfere most directly with the normal functioning of 1) system E 2) system G 3) system C 4) system D Which statement best describes arteries? 1) They have thick walls and transport blood away from the heart. 2) They have thick walls and transport blood toward the heart. 3) They have thin walls and transport blood away from the heart. 4) They have thin walls and transport blood toward the heart. In a human, the movement of glucose from the digestive tract to muscle cells is most directly a result of 1) 2) 3) 4) ingestion and digestion absorption and circulation anaerobic respiration protein synthesis Which two systems are most directly involved in providing molecules needed for the synthesis of fats in human cells? 1) 2) 3) 4) digestive and circulatory excretory and digestive immune and muscular reproductive and circulatory