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What organs, or parts, make up your circulatory system? • • • • Arteries Veins Heart Blood What is the job of your circulatory system? • To transport oxygen and nutrients around your body and to help to get rid of wastes Circulation There are 3 kinds of circulation in your body: PULMONARY Circulation: the flow of blood through heart, lungs, and back to the heart again. Circulation There are 3 kinds of circulation in your body: SYSTEMIC Circulation: Moves oxygen-rich blood to organs and body tissues and back to the heart again. Circulation There are 3 kinds of circulation in your body: CORONARY Circulation: Describes flow of blood to heart tissues. Types Of Blood Vessels Arteries Move blood away from heart Have thick & elastic walls, made of smooth muscles. Are connected to ventricles in the heart. Types Of Blood Vessels Veins Move blood toward the heart Have one-way valves.. Are squeezed by skeletal muscles. Carry blood with waste materials and that is oxygen-poor. Blood Vessels Clip Types Of Blood Vessels Capillaries Are microscopic blood vessels. Connect arteries to veins. Their walls are only one cell thick! Nutrients and oxygen flow to body cells through capillary walls. DIFFUSE Circulatory System by Brainpop 1. What parts belong to your cardiovascular system? 2. What does blood do when it gets to the lungs? 3. What does blood do when it gets to your various body cells? What is Blood Pressure? Blood pressure is the amount of pressure your blood is exerting on your blood vessels. It is highest in the arteries, lower in the capillaries, and even less in the veins. What is Blood Pressure? Blood pressure is always expressed in terms of two numbers, for example 112/60. The first number is a measure of the pressure when ventricles contract. (pushing blood out of the heart) The second numbers is a measure of the pressure when ventricles fill up. Blood Pressure Clip What is Blood Pressure? A wave of blood pressure is your pulse. Measure your resting pulse Measure your pulse after exercise A normal resting pulse is 65-80 beats per minute. 1. Where can you feel your pulse on your body? 2. What do we call it when blood pressure is HIGHEST? 3. What do we call it when blood pressure is LOWEST? 4. What do we call it when you have high blood pressure all the time? Humans have 4 chambers 2 Atria and 2 Ventricles Atria Atria Ventricle Ventricle The atria contract together and the ventricles contract together. The left and right sides of the heart are divided by a muscular wall called the septum. Aorta SVC Pulmonary Artery Pulmonary Vein Left Atrium Right Atrium Left Ventricle Right Ventricle Septum IVC Which two chambers always hold oxygen-rich blood? Left atrium & left ventricle Which two chambers always hold oxygen-poor blood? Right atrium & right ventricle Other Heart Parts to Know: Aorta: delivers oxygen-rich blood from left ventricle to the rest of the body Other Heart Parts to Know: Pulmonary artery: delivers blood from right ventricle to lungs Other Heart Parts to Know: Pulmonary vein: delivers blood from lung into left atrium Superior vena cava and vena cava: Inferior Veins (vena) that come from the body and deliver blood to the right atrium Heart Clip Artificial Hearts Your Blood Has 4 Jobs to Do: Four Functions of Blood: 1) Carries oxygen to body cells and removes carbon dioxide from all body cells Four Functions of Blood: 2) Carries waste products of cell activity to kidneys to be removed. Four Functions of Blood: 3) Transports nutrients from the digestive system to all cells. Four Functions of Blood: 4) Carries materials that fight infections and heal wounds. Parts of Human Blood Help fight infection White blood cells Transport O2 Red Blood Cells Help clot blood Platelets Contains nutrients & minerals Plasma Blood Types There are 4 blood types! yes no no ye s ye ye s no s ye s ye s no ye s ye s no no no ye s Blood Types Who can receive any blood type? AB Who can receive only type O blood? O Normal RBC 1. Blood is your body’s liquid _________________. 2. What is the scientific name for red blood cells? 3. What is hemoglobin? 4. How much blood does a person donate at a time? 1.What is a blood transfusion? 2.What are antigens? 3.People with O blood can donate to ___________. 4.What is the most common blood type in the United States?