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Blood Flow Powerpoint

Transcript: The two chambers that are associated with the pulmonary circuit are the right atrium and the right ventricle. 16.Explain what would happen if a branch of a coronary artery were to become blocked. The blockage of a oronary artery would lead to a restriction of blood flow to the demands of the active cardiac muscle. Oxygen: Turns deoxygenated blood into oxygenated blood so it can be used where it is needed throughout the body. Pulmonary veins: Carries oxygenated blood from the lungs torwards the heart. Left atrium: Collects blood from the pulmonary circuit. Bicspid/Mitral Valve: The papillary muscles contract which tenses the chordae tendineae, resulting in limited movement of the cusps, and preventing backflow. Left Ventricle: Ejects blood into the systemic circuit. Aortic Semilunar Valve: Gaurds the entrance to the aorta once the left ventricle is filled, then it opens to allow blood to flow to the aorta. Aorta: Pumps oxygenated blood to the rest of the body. Systemic System: Transports blood to and from the rest of the body. (Starting and ending at the heart). 13. What valves prevent backflow from aortic/pulmonary trunks into ventricles. The aortic semilunar valves valves prevent backflow from aortic/pulmonary trunks into ventricles. Into the left ventricle. 2. What prevents the AV valves from swinging into the atria? Where the blood then flows through the (mitral) bicuspid valve. The two chambers associated with the systemic circuit are the left atrium and the left ventricle. 14. Define pericarditis. Pericarditis is the inflammation of the pericardium. Functions: 20. Explain the signs/symptoms of agina pectoris. The signs of agina pectoris may include the blockage of 1 or more arteries/ coronary heart diasese. Symptoms of agina pectoris include: chest pain, fatigue, dizziness, and the inability to excercise. The blood then empties up through the inferior and superior vena cava back into the right atrium. Red= Oxygenated blood Blue= Deoxygenated blood When the ventricles contract, the AV valves are closed, and the SL valves are open. Damage to the semilunar valve on the right side of the heart would affect blood flow to the pulmonary trunk. Superior vena cava: Delivers doxygenated blood from the upper body, head, neck, etc. Inferior vena cava: Carries deoxygenated blood from the lower body, lower limbs, etc. Right Atrium: Receives blood from the systemic circuit. Tricuspid valve: The papillary muscles contract which tenses the chordae tendineae limiting the movement of the cusps and preventing backflow. Right Ventricle: Discharges blood into the pulmonary circuit. Pulmonary semilunar valve: Guards the entrance to the pulmonary trunk. Once the Right ventricle is filled, the pulmonary semilunar valve opens to allow blood to flow to the pulmonary arteries. Pulmonary Arteries: Send blood to the lungs and away from the heart. Lungs: Gas exchange occurs to convert carbon dioxide into oxygen. The blood then travels through the aorta where the blood then leads to all of the arteries of the body. 5. What role do the chordae tendineae and papillary muscles play in the normal function of the AV valves? 3. Why is the left Ventricle more muscular than the right ventricle? The role the chordae tendineae and papillary muscles play in the normal function of AV vales is during ventricular contraction, tension in the Papillary muscles pull against the chordae tendinae, which keep the cusps of the AV valve from going into the atrium. This action prevents the backflow of blood in to the atrium as the ventricle contracts. When ventricles relax, AV valves are open and the SL valves are closed. Chordae tendineae are loose and the papillary muscles are relaxed. Into the lungs, where the blood then becomes oxygenated. By: Victoria Skoney Up into the pulmonary arteries. The blood then goes to the body, arms, legs, brain, and organs.This is where the blood becomes deoxygenated. The veins from the entire body bring deoxygenated blood back to the heart. The more muscular left ventricle must generate enough force to propel blood throughout the body (except the lungs), whereas the right ventricle must generate only enough force to propel blood to the short distance to the lungs. Contraction of the papillary muscles pulls on the chordae tendineae, which prevent the AV valves from swinging into the atria. Questions: The causes of mitral valve prolapse could be 1 or both mitral cusps that have extra tissue bulging into the left atrium ech time the heart contracts: which causes regurgitation. 19. Heart murmurs are detected more/less frequently in the elderly? Heart murmurs are detected less frequently in the elderly. Through the pulmonary semilunar valve. 4. What are the causes of mitral valve prolapse? 9. What are the two chambers associated with the systemic circuit? The cause of arteriosclerosis could include: smoking, high blood pressure, obesity, and other factors that accumulate to plaque buildup. Symptoms may include chestpain,

Blood Flow

Transcript: Janeth Pedro Luis Blood Flow Sequence Superior Venae Cavae Superior Venae Cavae Its function is to return oxygen-poor blood to the heart from the upper body Its function is to return oxygen-poor blood to the heart from the lower body Inferior Venae Cavae Inferior Venae Cavae Right Atrium Right Atrium Receiving upper chamber on the right side of the heart Blood enters here through the superior and inferior venae cavae Right atrium contracts to force blood through the tricuspid valve into the right ventricle Tricuspid Valve Tricuspid Valve Receiving lower chamber on the right side of the heart Right Ventricle Right Ventricle Right ventricle contracts blood through the pulmonary semilunar valve into the pulmonary artery Pulmonary Valve Pulmonary Valve Pulmonary Trunk Pulmonary Trunk Blood vessel from the right ventricle of the heart and divides into the right and left pulmonary arteries Blood vessel that carries blood from the lungs to the left atrium of the heart Pulmonary Vein Pulmonary Vein Blood travels to the lungs where it receives oxygen Receiving upper chamber on the left side of the heart Left Atrium Left Atrium Blood returns from the lungs to the left atrium Left atrium contracts blood through the mitral valve into the left ventricle Mitral Valve Mitral Valve Receiving lower chamber on the left side of the heart Left Ventricle Left Ventricle Its the major muscular pump ; It sends out blood to the body systems The left ventricle contracts blood through the aortic semilunar valve and into the aorta Aortic Semilunar Valve Aortic Semilunar Valve Largest artery in the body, which carries oxygen-rich blood away from the heart into the systemic circulation system Aorta Aorta The aorta and its branches carry blood to body tissues EKG

Blood Flow

Transcript: http://kidshealth.org/parent/medical/heart/coa.html The Lungs Infected Wound In the Spleen the damaged red blood cells get filtered out of the blood. They get filtered out through the red pulp. Red pulp is one of the two main tissues in the spleen. The Red Pulp has White blood cells that eat the damaged blood cells.White pulp is the second tissue in the spleen that mostly is made up of White Blood cells and is part of the immune system. Once the blood goes through the Spleen it continues through the body. Once the blood gets to the small intestine it gets the nutrients.It gets the nutrients through the villi. Villi are small finger like structures that increase the surface area of the small intestine walls. Capillaries are inside the villi and through diffusion the nutrients get into the capillaries from the intestine. Arteries are what feed the blood into the capillaries. The Plasma is the part of the blood that carries the nutrients, vitamins, horomones that are collected. After the blood gets its nutrients it continues its journey. http://www.ghc.org/kbase/popup.jhtml?docId=aa54865 http://faculty.southwest.tn.edu/rburkett/A&P2%20Lymphatic%20system%20Lab.htm Oxygenated blood flows through the arteries into the kidneys. The arteries break off into millions of capillaries. Each capillary flows to a nephron, where the blood goes through the bowman's capsule. In the bowman's capsule, urea and water filter out of the blood stream through diffusion. Once the urea and water filters out, it travels through the proximal tubule, down to ureter, and then down to the bladder. The blood flows back out to the body and continues through out the rest of the body. When the blood gets to the brain one of the things it does is bring the reactants for cellular respiration to occur. Cellular respiration happens in the cell's mitochondria. One of the products of cellular respiration is Energy/ATP. The energy helps your brain and the neurons in it carry out there activities. In the brain there are about 100 billion neurons. The three types of neurons are sensory, Motor,and Inter. Sensory neurons pick up stimuli in the enviroment and Motor neurons move your muscles. Inter neurons then carry messages between neurons. One structure in a neuron is an axon which brings messages away from the neuron body. After the brain the blood then heads to the vena cavas. http://histologyolm.stevegallik.org/node/411 After the blood gets pumped through the pulmonary artery it arrives at the lungs. Again it gets oxygenated through diffusion in the capillaries and then gets pumped to the left side of the heart.Where the blood begins its journey again. Once the blood has been all round the body, it comes back to the heart deoxygenated. The deoxygenated blood goes through the vena cavas into the right atrium. Then, goes through the right AV valve to the right ventricle. Finally, the blood goes out the pulmonary aretery to the lungs. Again, the cardiac muscle contracts, sending the blood to the lungs. http://jama.jamanetwork.com/article.aspx?articleid=201759 The Lungs http://www.summitstc.com/blog/bid/285535/Hamstring-Injury Kidneys When the blood reaches the liver, the liver cells filter out toxicins like alcohol and waste by the process of diffusion. In the Lungs the Blood gets oxygenated through the process of diffusion. When you breath in the smooth muscle in the Diaphragm contracts allowing air to pass in and out of the lungs. The Air sacs/Alveoli are small balloon like structures that have surface area that makes them a good place for gas exchange. Capillaries surround them so Diffusion can occur and Oxygen can get to the bloodstream.Once the Blood gets oxygenated it goes into the Pulmonary Vein which heads to the Heart. Spleen The Right Side of The Heart http://www.turbosquid.com/3d-models/blood-red-white-cells-3ds/687109 Liver The Journey Of The Blood After the oxygenated blood gets to the left side of the heart, it enters the left atrium, through the left AV valve to the left ventricle. When the cardiac muscle contracts,the blood gets pushed through the aorta to the whole body. http://legacy.owensboro.kctcs.edu/gcaplan/anat2/notes/APIINotes3%20urinary%20system.htm Brain http://stroke.nih.gov/materials/strokechallenges.htm Once you develop a wound by damaging a blood vessel your body starts its healing process. First, your blood vessels that surround the wound tighten so the flow of blood to the damaged area reduces. Then platlets get activated by enzymes in the wound. The platlets clog holes in the blood vessel to create a scab and stop bleeding. The blood vessels around the wound then expand again so white blood cells can go to the wound. When the white blood cells get there they try to stop infection by eating the bacteria. Sometimes your body needs to keep fighting infection so that means your blood needs to restock on blood cells. The Left Side of the Heart Small Intestine

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