Cardiovascular system

Over the years, biologists have carried out experiments to explore the differences in animal hearts. With regards to this experiment at hand, the differences were explored between mammalian and amphibian hearts. This experiment also helps us determine the effects of external, biological factors and pharmacological substances on the contraction of the heart. The following will serve as an overview of the structure and functioning of amphibian heart. A frog heart has three chambers (two atria and…

Breathing air in and out is the first step to the respiration process. Respiration is a series of metabolic reactions and processes that take place within the cells of organisms. The organisms store biochemical energy within adenosine triphosphate (ATP) molecules. For the process to being, we must first draw air into our lungs. The lungs muscles contract and expand the chest cavity, causing a negative or hypotonic pressure within the pleural cavity. The hypotonic pressure then forces the lungs…

The heart’s role for the entire body is not only limited to pumping blood. It also needs its own blood supply to be able to perform its several functions. The process of the heart managing its own blood supply is known as coronary circulation. The walls situated in the heart have systemic blood vessels. These exist to meet the needs of the heart for blood supply. Oxygenated blood is brought to the myocardium via the left and right coronary arteries. They are also responsible for bringing the…

I chose to take a brief look at coronary procedures involving grafts. To answer the question first we need to understand some of the differences in veins and arteries. The arteries in the systemic system, deliver oxygenated blood from the heart, in a high pressure low volume stream to the capillaries found throughout the body. The systemic veins carry the deoxygenated blood from the capillary beds in a low pressure, high volume, valve controlled flow, back to the heart. From there, the heart…

I don’t do anything else other than my school work, so I could try to incorporate exercising as something I do for fun during the week. Having an exercise routine in my life will improve my life in many ways. Exercising will reduce my risk of cardiovascular diseases. There is a history of heart disease in my family. My pap had heart problems before he passed away. My grandpa has heart problems, and my great uncle has heart problems. I know I am overweight, so exercising could help me reduce my…

Healthier food choices that have lesser sodium content are also available through the local farmer’s market and the community garden. Furthermore, the American Heart Association (2013) proposed a guide stating that the most effective way to improve cardiovascular health is to use resources available at the community level. This includes a variety of community settings such as healthcare facilities and organizations where most people spend their time (Pearson,…

Cardiovascular disease (CVD) is the preeminent cause of death for both males and females in the United States (US).1 Approximately 610,000 people in the US die of CVD each year, which constitutes 1 out of every 4 deaths. Furthermore, 1 in 3 individuals, or approximately 80 million adult Americans have CVD. In 2011, the projected direct costs from health expenditures and indirect costs from lost productivity for CVD and stroke, which is a long-term complication of cardiovascular disorders, were…

female demographic and saw an opportunity to educate women about the more than 500,000 women who die each year due to cardiovascular disease. In 2005, the American Heart Association founded the Go Red for Women campaign. The American Heart Association 's main focus for the Go Red for Women campaign is to dispel myths of cardiovascular problems for women and raise awareness of cardiovascular problems as the leading factor of death in women today. With their constant dedication and passion for…

Sadat Tavafian, Mohammed Gholami Fesharaki and Mohammed Reza Jafari studied factors predicting nutrition and physical activity behaviors with the concern of cardiovascular disease in Tehran University students. This explanatory application study aims to identify the important predictors of nutrition and physical activity in relation to cardiovascular disease in students of Tehran University. (Rahmati-Najarkolaei, Tavafian, Fesharaki, & Jafari 2014). Participants, Tehran University students…

Introduction Mitral valve regurgitation, also called mitral regurgitation, is a condition in which blood leaks from the mitral valve in the heart. The mitral valve is located between the upper left chamber of the heart (left atrium) and the lower left chamber of the heart (left ventricle). Normally, this valve opens when the atrium pumps blood into the ventricle, and it closes when the ventricle pumps blood out to the body. Mitral valve regurgitation happens when the mitral valve does not close…