Ethnography Of An Electrocardiography

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.

1. The pulmonary circuit is supplied by which ‘side” of the heart? The systemic circuit? The right atrium

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

.1 Explain the ECG complex waveform pattern (PQRST) The ECG waveform allows us to monitor the electrical activity of the heart and how the mechanical side of it is functioning. At the beginning of the ECG wave form is the P complex which is when the depolarisation of the atrial cells and when the SA (Sino atrial) node induces an electric wave that travels throughout the heart to cause the muscle cells to contract. After the P wave there is the PR interval, it is a flat line as the ventricles in the heart are filling up with blood which roughly takes 0.2 seconds.

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.

Did you know the circulatory system comprises the heart, veins, capillaries and arteries? The system moves pure oxygenated blood in a continuous and controlled way from the lungs and heart so that blood can reaches every cell. Blood travels through a type of network of vessels that include capillaries that permeate every tissue of the body. Once it’s depleted of oxygen, the blood returns to the lungs and heart and the cycle continues.

Contrast a healthy heart ECG with an abnormal one in which ventricular excitation is independent of atrial excitation (P waves).

There are two loops that make up the circulatory system. This is the main role that the heart plays in the circulatory system. One loop carries oxygen poor blood from the heart to the lungs for oxygen with the second loop carrying oxygen and food to the tissues and cells (From The Heart, 2002).

The cardiac cycle describes the coordinated and rhythmic series of muscular contractions associated with the normal heart beat.

Transporting nutrient and waste products is also an important part of the cardiovascular system. When food is digested in the stomach, the nutrients are sent into the bloodstream. As the flow of blood continues within the body, the nutrients release themselves to different structures in the body. The system is divided into two circuits. Pulmonary circuit is when deoxygenated blood is pumped from the heart and transferred to the lungs. The lungs then have the job to turn the blood into oxygenated blood and return it to the heart. The systemic circuit is when nutrients and gases are delivered to all the tissues and muscles in the body through the bloodstream so they can function properly. When nutrients are not in use such as glucose and amino

Fish have a two-chambered heart with one atrium and one ventricle. Oxygen diffusion occurs in the gills. Amphibians have a three chambered heart with two atria and one ventricle. Reptiles have a four chambered heart with two atria and two ventricles. However, there is mixing of blood because the ventricle separation is incomplete. Birds and mammals both have a four chambered heart. All of these hearts contain valves and the rest of the body receives blood through arteries (which carry oxygenated blood away from the heart) and veins (which carry deoxygenated blood back to the heart) and capillaries (where the two meet). The cardiac cycle is the period during which the heart fills with blood and pumps it out. During one cycle, it receives deoxygenated

Cardiac cycle - a concept that reflects the sequence of the processes taking place in a single contraction of the heart and subsequent relaxation. Each cycle includes three major stages: atrial systole, ventricular systole and diastole. The term systole is muscle contraction. There are electric systole - the electrical activity that stimulates the myocardium and causes mechanical systole - contraction of the heart muscle and a decrease in the volume of the heart chambers. The term diastole is muscle relaxation. During the cardiac cycle there is an increase and decrease in blood pressure, high blood pressure, respectively, at the time called the systolic ventricular systole and during their low diastolic - diastolic.

Partitioning in this cycle are three main blood vessels: arteries, veins, and capillaries. These networks are scattered throughout the body and blood travels in only one direction. Lastly, the heart (located behind the sternum or breastbone) is a hollow organ enclosed of smooth muscle that accommodates 4 chambers. Working in a rhythmic cycle, it pumps blood when contracting and accumulates with blood while relaxing. Therefore, allowing mermaids and humans to perform their roles in daily life.

An electrocardiogram can be used to record activity during the cardiac process of pumping and returning blood to the body and heart because of the electric current that spreads through the tissue of the heart and to the surface of the body. By