Dan Olson's Broken Heart

Heart valves ensure one way blood flow through heart. The atrioventricular (AV) valves lie between the atria and the ventricles prevents the back flow of blood in to the atria while the ventricles contract. Chordae tendinae anchor AV values to papillary muscles. The left AV valve, the mitral or bicuspid valve consists of two cusps of endocardium. The right atrioventricular valve, the tricuspid valve, has three cusps. The second sets of valve are the semilunar valves. The pulmonary semilunar valves lie between the right ventricle and pulmonary trunk. Aortic semilunar valves lie between ventricle and the aorta. Semilunar valves prevent the backflow of blood into the ventricle.

The four valves of the heart are the tricuspid valve, the pulmonic valve, the mitral valve, and the aortic valve. The tricuspid valve is located between the right atrium and the right ventricle. It is responsible for allowing blood to flow from the atrium to the ventricle, preventing backflow of blood into the atrium. The pulmonic valve is located between the pulmonary arteries and the right ventricle and is responsible for allowing blood flow from the heart to the lungs. The mitral valve is found between the left atrium and the left ventricle, which allow blood to flow from the left atrium into the left ventricle preventing backflow of blood back into the left atrium. The aortic valve is found between the aorta and the left ventricle and allows blood to flow to the aorta and throughout the body.

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

Most heart diagrams show the left atrium and ventricle on the right side of the diagram. Imagine the heart in the body of a person facing you. The left side of their heart is on their left, but since you are facing them, it is on your right.

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…..

I was able to observe each of the atriums and ventricles, along with the aorta and valves. I compared the left and the right side, seeing how they are different in size along with different valves and muscles. With looking at the heart I labeled all different parts those including, right atrium, right ventricle, left atrium, left ventricle, tricuspid valve, aorta, aortic valve, papillary muscle, septum, and bicuspid valve.

In this lab, the students observed the rate and rhythm and how it fluctuates when an individual is relaxed, in a seated position, and after exercising. The Heart is a hollow muscular organ that is cone shaped and it is located in the mediastinum in between the lungs (The Heart, Slide 3 2016). The heart is separated into two main divisions, the pulmonary circuit and the systemic circuit. The pulmonary circuit helps carry blood to the lungs from the heart for gas exchange and it is located in the right side of the heart. In the pulmonary circuit the heart fills with blood in the right atrium then it passes through the right atrioventricular valve which then leads to the right ventricle. Once it is in the right ventricle, the right ventricle contracts which opens the pulmonary valves. After this blood flows from the pulmonary valve to the pulmonary trunk which then distributes it into the right and left pulmonary arteries that supply the lungs where it deposits oxygenated blood.

right atria, with the bottom chambers the left and right ventricles. The heart consists of several

You know how important your heart is, so it is no wonder people worry when they hear someone has heart problems. More than 60 million Americans have some form of heart disease. The heart is an amazing organ. Its job is to pump oxygen and nutrient rich blood throughout the body to sustain life. In fact, this fist sized organ beats, or expands and contracts, 100,000 times per day. It pumps five to six quarts of blood each minute or about 2,000 gallons per day. That’s a lot of blood. Blood is essential. It carries fresh oxygen from the lungs and nutrients to the body’s tissues. It also takes the body’s waste products, like carbon dioxide, away from the tissues. (“How the Heart Works”)

The heart is a very complex organ that is necessary for life. The heart is responsible for bringing oxygenated blood around the body. There are two main ways of transportation of blood around the body. The arteries go around the body and bring the oxygenated blood to various parts of the body. Once the oxygenated blood is utilized, it is brought back to the heart by the veins. The heart is broken into four major chambers that are separated by four major valves. There are two atria, which are located at the top of the heart, and two ventricles, which are located at the lower half of the heart. [5] The atria and ventricles are connected by the Mitral (bicuspid), tricuspid, pulmonary, and aortic valve. Each valve closed after the contraction to

The upper two chambers, atria, carry blood to the heart. The lower two chambers, ventricles, carry blood out of the heart. In the pulmonary circuit, blood flows from the veins to the right atrium to the right ventricle to the pulmonary arteries to the lungs. In the systemic circuit, blood flows from the left atrium to the left ventricle to the aorta to the branching arteries to the capillaries throughout the body. The heart has valves to prevent the backward flow of blood. Atrioventricular valves separate the atria and ventricles. The pulmonary valve and aortic valve separate the ventricles and arteries. A heartbeat is the sound the valves make as they open and

After the blood is transported throughout the body and is deoxygenated, the capillaries eventually merge into veins, where the blood returns to the heart, so as to become oxygenated once more. The heart itself consists of four chambers, the right and left atria, which are near the top of the heart above the other two chambers, the left and right ventricles. Blood enters the heart through two large veins, the superior and inferior vena cava. The deoxygenated blood from the body into the right atrium of the heart. The right atrium then contracts and blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the right ventricle is full, the tricuspid valve shuts, preventing blood from flowing backward into the atria while the right ventricle contracts. Once the right ventricle contracts, blood leaves the heart through the pulmonary valve, into the pulmonary artery and to the lungs where the blood becomes oxygenated. Now we transition from heart-to-lungs to lungs-to-heart. After the blood travels through the pulmonary valve, it begins to enter your lungs, pulmonary circulation is the process. Now blood travels to the pulmonary artery to tiny

The pulmonary valve is one of the semi lunar valve next to aortic valve, lying between the right ventricle and the Pulmonary artery which takes deoxygenated blood from the body and pumps it into the heart. Generally tricuspid, the pulmonary valve is considered simpler in anatomical sense. A semi lunar valve separates a ventricle from a blood vessel which the ventricle leads into in its flow path of blood. The absence of chordae tendinae is prominent in the semilunar valves. The pulmonary leaflets are names based on the anatomic orientation to the aortic valve faces that lie adjacent to the pulmonary trunk. The commissures of the right and left leaflets are supported by the supraventricular crest of the right ventricle which separates the pulmonary valve from the tricuspid valve. The left cusp is in the anterior region of the interventricular septum while the anterior cusp is located on the delicate wall of the pulmonary conus. Meanwhile the right cusp is on the

Heart Disease refers to several types of heart conditions. According to World Health Organization or WHO, heart disease is the leading cause of death in United Kingdom, United States, Canada and Australia. In fact, about 600, 000 individuals in the US dies of heart disease every year and that is 1 in every 4 deaths. Heart disease is among the most widespread and costly health problems facing today’s nation. It accounts for more than $500 billion in health care costs in 2010 alone. It is also important to know that heart disease can be prevented and by knowing the risk factors that can heighten one’s chances of developing the disease it may be hindered. In this paper, I provide an overview of the function of the heart and the risk factors that can increase the chances of acquiring or worsen an existing condition that will affect our health severely. Finally, I review three medical conditions associated with heart disease, and conclude the importance of this topic with suggestions and recommendations about strategies to reduce the development or chances of acquiring heart problems and to keep a healthy heart to improve personal well-being.

The Right Atrium, as it is called, receives blood from the upper and lower body through the superior vena cava and the inferior vena cava, respectively, and from the heart muscle itself through the coronary sinus. The right atrium is the larger of the two atria, having very thin walls. The right atrium opens into the right ventricle through the right atrioventicular valve(tricuspid), which only allows the blood to flow from the atria into the ventricle, but not in the reverse direction. The right ventricle pumps the blood to the lungs to be reoxygenated. The left atrium receives blood from the lungs via the four pulmonary veins. It is smaller than the right atrium, but has thicker walls. The valve between the left atrium and the left ventricle, the left atrioventicular valve(bicuspid), is smaller than the tricuspid. It opens into the left ventricle and again is a one way valve. The left ventricle pumps the blood throughout the body. It is the Aorta, the largest artery in the body, which originates from the left ventricle.