Pulmonary Circulation
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1 Pulmonary Circulation Returning blood coming back to the right side of the heart from the body and going to the lungs to be recycled. 1
2 Systemic Circulation Oxygen rich blood coming back from the lungs into the left side of the heart and leaving to the rest of the body through the aorta artery. 2
3 3
4 Lesson 14Name/ Per. The Pumping Heart HBS, pp Reference: SI, pp Lesson Objectives: 1. Use a model to explore the double pump action of the heart. 2. Determine the direction of the flow of blood thru the heart. 3. Recognize that humans have a closed circulatory system. 4. Study the structure of the heart. 5. Explain the differences between pulmonary and systemic circulation Introduction 1. How does blood move thru the body? Pre Inquiry Getting Started Questions 1. How many chambers does the heart have? 4 Chambers 2. Blood going away from the heart travels in Arteries, while blood being carried to the heart travels in Veins. Inquiries 14.1 Analyzing the Siphon pump Heart Model 1. What makes the water begin to flow thru the pump? The water is drawn into the tube when the bulb on the siphon is squeezed and then released. 2. Through which tube the stiff one or the flexible one does water enter the pump? Water enters through the stiff tube. 3. What keeps the water from flowing back thru the tube when you release the bulb? A valve prevents the water from moving back down the stiff tube. 4. Listen closely as you release the bulb? Can you hear clicking sounds? If so what appears to be causing them? There is a slight click when a valve closes. 5. Label the structures on the heart and relate parts to the pump model on Diagram. 6. Draw arrows to show how blood flows from the heart to the lungs to the heart and then to the body again. Post Inquiry Reflections Questions Listen to your heart. What causes the sound you hear in the stethoscope? 4
5 5
6 Pump Your Heart Music Video Heartbeat sound cf80 Heart bypass surgery 6
7 Carry blood away from your heart; you can feel the force of the heart pumping here. Carry blood back into your heart; they have valves to prevent backward flow Very small blood vessels where nutrients, waste, and gas exchange happen. 7
8 55% of blood Liquid component of blood that carries nutrients to cells and wastes away 44% of blood carries oxygen and iron to the cell molecule attaches to Hemoglobin 1% of blood the cells which attack foreign bodies that might cause infection Small fragments in blood that helps blood clot 8
9 Aorta largest Artery leaving heart Atrium upper chamber of heart Ventricle lower chambers of the heart Artery blood vessels that carry blood away from the heart Veins blood vessels that carry blood to the heart Capillary blood vessels that exchange nutrients, gas, and waste. Platelets part of blood that aids in clotting Red Blood cells part of blood that carries iron White blood cells part of blood that fights invaders Plasma liquid part of blood, made up of water and dissolved materials Pulmonary artery vessels that carries blood away from heart to lung Pulmonary Vein vessels that carries blood from lung to heart Valves gates in heart that keep unoxygenated blood from mixing with oxygenated blood Blood Pressure the force exerted by blood against the walls of the artery. High blood pressure can be caused by smoking, high salt intake, being too fat, having high cholesterol, stress. One can lower it with proper eating and exercise and weight control 9
10 Practice labeling the heart parts and marking the order of the blood flow. 10
11 red blood cells oxygen platelets heart arteries veins intestines 4 chambers capillaries B left F atrium E pulmonary vein D pulmonary artery right C ventricle left G ventricle aorta A 11
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