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Biological & Biomedical Sciences
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An Examination Of The Heart – From The Micro To The Macro Level (Essay Sample)


Option #1: Differences in Hearts
Each person has a unique set of circumstances that lead to a unique heart, but there are some trends where we see consistent similarities. For example, how does a runner's heart perform differently from that of the average non-runner? How do infant's hearts work differently from adult hearts? Is there a difference in male and female hearts? Pick any two groups of people that interest you (they do not have to be one of the groups just mentioned) to compare for this assignment.
Address the following points in your paper:
1) Describe the function of the heart.
2) Trace the flow of blood through the heart to the rest of the body.
3) Describe what a healthy heart sounds like; what a healthy heart rate is; and what a healthy blood pressure is.
4) Compare and contrast heart sounds, heart rate, and blood pressure in the two groups of focus for your paper.
5) Are the sounds, heart rate, and blood pressure in these groups of people healthy, or is there a problem? Explain.
6) What was most interesting about comparing these two groups?
Essay Requirements:
Your cohesive and well-organized essay should be at least 1-2 pages in length, double spaced.
Include at least one scholarly reference in addition to the course textbook. The CSU-Global Library is a good place to find these references.
Include a title page and a references page.
Follow the CSU-Global Guide to Writing and APA.


An Examination of the Heart – From the Micro to the Macro Level
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1 The heart is perhaps the most crucial of all organs in the body. It pumps blood throughout the body, which then supplies all the necessary nutrients and resources to keep the body's functioning.
2 Generally, blood enters the heart through two major veins, which are the superior and inferior vena cava. To start off with, the oxygen-poor blood, which comes from the parts of the body is emptied into the right atrium of the heart. Through a series of contractions, the blood from the right atrium passes through the tricuspid valve and flows into the right ventricle that is below it. As it fills with blood, the tricuspid valve shuts down while the pulmonic valve opens up in order to allow the next contraction to push the blood forward into the pulmonary artery and towards the lungs where it is oxygenated. After the lungs, the blood passes through the pulmonary veins that that transfers the blood into the left atrium of the heart. Another series of contractions then transfer the blood into the left ventricle, which flows through the tricuspid valve. Afterward, this blood then goes through the aorta to be distributed to every part of the body, thus completing the cycle.
3 For the average adult, a healthy heart sound is produced via the sequence of closing the atrioventricular valve and the semilunar valves during each heartbeat. These heart sound are called the club (first heart sound – S¬1) and dup (second hearing

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