Blood Breaks: The Right Atrium Pressure

Oxygen poor blood fills the right atrium from either the superior or inferior vena cava.

In the normal conduction of the heart the electrical impulse starts in the SA node, also called the pacemaker of the heart. The electrical impulse travels through the right atrium and through the Bachmann’s bundle into the left atrium. This stimulates the atria to contract. Next the signal travel to the AV node. The AV node slightly delays the signal. This delay is needed for the heart to beat properly. Without this delay the atria and ventricles would beat at the same time. The electrical signal then travels to the Bundle of His where it is split into the signals going to the right and left ventricle. The signal

The system works because in blood there are antigens and agglutinogens. In type A, only type A antigens on the red blood cells. Similar to this type B only has type B antigens. Type AB has both A and B antigens, which is why it is the universal recipient. Type O has neither A or B antigens making it the universal donor.

The system circuit, starts via the left atrium and passing the mistral valve down into the left ventricle. The ventricle will then contract shortly after the atria have started relaxing and followed by the closing of the atrioventricular valves, so blood does not back wash into the atrium. Pressure will becoming higher in the left ventricle allowing ventricular systole 's second phase to begin by forcing blood through the aortic semi lunar valve up into the aorta so blood may reach the rest of the tissues in the body. Afterwards, the ventricles will becoming diastolic

As there is a hole in the wall separating the atria, the oxygenated blood from the left atrium enters the right atrium instead of the aorta. The oxygenated blood that entered the right atrium mixes with the deoxygenated

In the systemic circuit blood returns from the lungs into the left atrium. Once in the left atrium blood flows though the left atrioventricular valve into the left ventricle. The left ventricle then contracts and the aortic valve opens because of the contraction. Blood then flows through he aortic valve into the ascending aorta and then once in the aorta it is then sent to every organ in the body where it excretes oxygen and intakes carbon dioxide. Finally, the carbon dioxide rich blood returns itself to the heart for the process to reoccur again. Both circuits must always maintain circulation so that blood can be constantly disbursed throughout the body (The Heart, Slide 11

Normally, blood from the right side of the heart is pumped to the lungs where the blood is oxygenated. The oxygenated blood from the lungs is then pumped to the left side of the heart. From the left side of the heart, blood is pumped out to the rest of the body. When an ASD occurs, blood from the left atrium mixes with blood in the right atrium. The blood is then recirculated to the lungs

In this essay I will cover the meaning of systolic and diastolic pressure. The range of levels from optimal to poor in relation to blood pressure. I will take my blood pressure as well as my mother’s and discuss the correlations between blood pressure and lifestyle, stress level or activity level. Last, I will discuss how I will incorporate this knowledge in my future training endeavors.

Cardiac muscle has short branching fibers, is striated, and functions involuntary allow for the contraction of the heart to pump blood throughout the body (Castillo, 2018). The conduction system of the heart includes the Sinoatrial node, Atrioventricular node, left and right bundle branches, and Purkinje fibers and functions off of action potentials of nerve impulses. The Sinoatrial node is in the upper right atrium and is where the action potential begins and rhythm and pace of the heart is determined. The action potential will then travel to the Atrioventricular node in the lower right atrium where the impulse is delayed for a whole second so the left side of the heart can contract. After that the impulse travels to the Atrioventricular bundle, which connects the atria and ventricles. Once this is completed, the potential travels to the left and right bundle fibers that signal the septum and apex of the heart. Finally, the potential will reach the Purkinje fibers and stimulate the walls of both ventricles. This completes one cardiac cycle. A cardiac cycle is described as all the events associated with the blood flow through the heart during one complete heartbeat (McKinley, 2016). A heartbeat involves the contraction {systole} and relaxation {diastole} of the heart chambers. The most important driving force to continually move blood through the heart is the opening and closing of

I. Abstract: The effects on different aspects of cardiopulmonary fitness, respiratory rate, mean arterial pressures, electrical activity of the heart, and pulse rate, were all tested on Freshmen Biology students in regards to how exercise affects the results and if there is a difference between males and females. Students did a moderate intensity exercise for two minutes, and the results were recorded. There was at least a slight gender difference between all three measurements; for all three, males, on average, had a higher net change after exercise. This, however, could have been in part due to errors. In addition, both genders saw an increase after exercise in all three measurements, which was expected. In the future, one should repeat the

If the heart is compromised, it can compensate for a time by pumping harder and faster, but at a certain point, it is so over worked that it can no longer over exert the force of contraction and pump more volume out to the tissues. “The stroke volume of the heart increases in response to an increase in the volume of blood in the ventricles, before contraction (the end diastolic volume), when all other factors remain constant (Frank Starling law)” . There are four one way valves that keep the blood flowing in the correct direction throughout the body. Ther e are the mitral, tricuspid, pulmonary and aortic valve. During each beat of the heart, they open and close, allowing blood to flow through the vasculature. When the aortic valve between the left ventricle of the heart and the main artery (aorta) became stenosed, it no longer allowes the blood to pump through properly. When the left ventricle has to overcome the higher pressures (due to constriction or disfunction of the aortic valve) to force blood into the aorta. Feeding oxygen rich blood to the tissues. The extra work can cause enlargement or thickening of the heart muscle and over time, becomes weakened.

The S-A node signal is delayed by the atrioventricular node to allow the full contraction of the atria that allows the ventricles to reach their maximum volume. A sweeping right to left wave of ventricular contraction then pumps blood into the pulmonary and systemic circulatory systems. The semilunar valves that separate the right ventricle from the pulmonary artery and the left ventricle from the aorta open shortly after the ventricles begin to contract. The opening of the semilunar valves ends a brief period of isometric (constant volume) ventricular contraction and initiates a period of rapid ventricular ejection.

The blood returning from the lungs, enters into the right side of the heart, then pumps all around the body. This process helps to ensure that adequate oxygen and nutrients are getting throughout the body and that everything is working

The pressure created in the arteries by the contraction of the left ventricle is the systolic blood pressure. After the left ventricle contracts, it begins to relax, then refills with blood from the left atria, meanwhile the pressure in the arteries falls, this is the diastolic blood pressure. In other words, during systole, cardiac muscle tissue is contracting to push blood out of the chamber; during diastole, the cardiac muscle cells relax to allow the chamber to fill with blood; systolic blood pressure is the higher number and diastolic blood pressure is the lower number.

Blood pressure, the pressure of blood in the circulatory system, is a vital aspect to the human body in order to maintain homeostasis. Many Americans are not aware of the seriousness of having high blood pressure. High blood pressure is called Hypertension, which can be a silent killer if untreated. There are many causes of Hypertension, including diet, age and race. Doctors now are making classifications of pre-hypertensive, which can help patients maintain their health and possibly avoid hypertension, if they follow the advice of their physician. Americans should eliminate fatty foods from their diet, be mindful of their age and race as they may become prone to Hypertension, which can lead to heart damage, heart disease, congestive heart failure, stroke and maybe death if untreated.