Cardiovascular System - Heart Attack From Case Studies for Understanding the Human Body S. Braude, D. Goran, and S. Maxfield Uncle Jake and Aunt Leah were playing golf last week. On the sixth hole, Jake told Leah that he was having unusual pain in his left arm and chest. All of a sudden he felt weak and complained that his shirt was much too tight. A dentist playing one hole behind them examined Jake and found he was short of breath, pale, and sweating. He called 911 on his cell phone and told Jake to lie down and wait for the ambulance. The paramedics rushed Jake to the hospital where he was evaluated by a cardiologist. The tests showed that he had four clogged arteries. He was scheduled for surgery the next day. 1. …show more content…
2. Using your knowledge of the pathway of blood, explain the flow of blood through the heart. • Oxygen poor blood fills the right atrium from either the superior or inferior vena cava. • Then, that blood passes through the tricuspid valve and to the right ventricle. • The right ventricle fills up tricuspid valve closes right ventricle contracts pulmonary valve opens the blood flows into the pulmonary artery pulmonary valve closes pulmonary artery splits into two vessels each going to the lungs. • The oxygen rich blood returns from the lungs and it goes through the pulmonary vein to the left atrium. • When the left atrium is filled with blood, the heart contracts and the blood passes through the bicuspid valve and into the left ventricle. • When the left ventricle is full, the bicuspid valve closes and the aortic valve opens. This allows the blood into the aorta and once the blood passes the aortic valve closes. Finally, the blood then has access through the rest of the body by systematic capillaries veins back to the right atrium. *Both sides of the heart are doing this at the same exact time and contracting/relaxing is what pumps the blood from one place to the other. What would cause his weakness and shortness of breath? The cause of his weakness and shortness of breath would be because not enough oxygen rich blood is coming back into the heart. 3. What is the job of the coronary arteries? What
Both the right and left atrium contract causing blood to flow though the two valves, and then into the left ventricle. The left ventricle pumps blood into the systemic circulation through the aorta. This systemic circulation system is much bigger than the pulmonary circulation system, which is why the left ventricle is so big. The blood on the left side of the heart is oxygenated. It becomes oxygenated when the deoxygenated blood passes through the right atrium and then flows into the left ventricle. It is then pumped along the pulmonary artery into the lungs where it is oxygenated. It then travels through the pulmonary veins back into the heart. It enters through the left atrium and then travels to the left ventricle. This process is repeated over and over again, to make blood continuously flow through the heart, lungs and body. This process ensures that there is always enough oxygen for the body to work
Likewise, Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle, forming the complete circulation.
In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left
Once the blood cell gets to the superior vena cava it goes through the right atrium and the right ventricle, then through the pulmonary artery and into the lungs.
form the pulmonary veins, which return the oxygenated blood to the left atrium. Backflow of
First the de-originated blood goes into the right atrium. And the originated blood goes through the left atrium. The right atrium then pumps blood through the tricuspid valve into the right ventricle, and the left atrium pumps blood through the bicuspid valve into the left ventricle. The right ventricle contracts, semi lunar valve opens and deoxygenated blood travels back to the lungs. The left ventricle contracts, semi lunar valve opens and oxygenated blood goes out to the body.
The right atrium is where the process begins. Then, blood travels through the tricuspid valve to the right ventricle, and from there to the pulmonary artery. Once the blood travels through the pulmonary artery, it reaches the lungs. While in the lungs, the blood goes through a gas exchange: deoxygenated blood gets oxygenated (The gas exchange takes place in the alveoli, which are tiny air sacs in the bottom of the lungs
The left side of the heart, has the left atrium and ventricle that takes in oxygenated blood from the lungs and pumps it out of the aorta.
Blood flows from the tissues → superior and inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary semilunar valve → pulmonary artery → lungs → pulmonary veins → left atrium → bicuspid (mitral) valve → left ventricle → aortic semilunar valve → aorta →body tissue.
Once deoxygenated blood enters the right atrium, it travels through the tricuspid valve into the right ventricle. Then the blood goes through the pulmonary semilunar valve into the pulmonary arteries. Once in the pulmonary arteries the blood is pumped into the lungs where it is then oxygenated. The blood goes from the lungs through the pulmonary vein into the left atrium. From there it passes through the bicuspid valve into the left ventricle where it is then pumped out through the aortic semilunar valve into the aorta (Drake 101). From the aorta the blood goes to the right and left coronary arteries.
In a normal heart blood would flow through the right atrium, to the right ventricle, to the lungs, back to the heart, into the left atrium, and into the left ventricle.
Next stop. Right atrium. One of the four chambers of the heart, the right atrium lets deoxygenated blood to pass through the tricuspid valve into the right ventricle and from there to the lung to oxygenate. The tricuspid valve, also known as right atrioventricular valve is located between the two chambers and it looks like flaps that blocks blood flowing back into the atrium. (Yahoo Health, 2013) The right ventricle of the heart has the mission to pump the blood into the pulmonary artery via the pulmonary valve and pulmonary trunk right into the lungs. Ready to go through the pulmonary valve into the pulmonary artery? Here we go! Weeeee…..
has to work harder pumping blood to the rest of the body. Blood in our
In a sweeping fashion, the right atrium contracts and forces the final volume of blood into the right ventricle. The left atrium contracts and contributes the final 20% of volume to the left ventricle.
Each part of the heart has it’s own unique job contributing to the function of circulating oxygenated blood and deoxygenated blood changing into oxygenated blood. The right side of the heart, right ventricle and right atrium process deoxygenated blood. The deoxygenated blood travels into the right atrium via the superior vena cava. The superior vena cava is a large and has diameter of 24mm. The right atrium is one of four chambers in the heart once through the right atrium the deoxygenated blood then travels to tricuspid valve. The tricuspid valve has three leaflets posterior, septum and anterior. The tricuspid valve functions to prevent back flow of blood to the right atrium, attached to the tricuspid valve is chordae tendineae. Chordae tendineae