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Reaction Paper On Cardiovascular System

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The Cardiovascular System
By: Shantinique Evans
Kena Jefferson
Shanelle Phillips
Shanelle Cunningham
Kthaw Mason-Lewis
Roseville PN Cohort-5

The cardiovascular system can be thought of as a huge pumping station for the blood we use in our bodies. The human heart weighs about 11oz. The heart can pump nearly 1.5 gallons of blood through the body per minute. This hollow organ is made up od four hollow chambers that fill up with blood and pump it though the body. These chambers are called the left and right atria and the left and right ventricles. The atria receive the blood from the major veins and the ventricles discharge the blood through the heart. The lining of the chamber walls is the myocardium. Each chamber wall is lined with a thin layer of fiborus smooth tissue called endocardium. The covering of around the heart is called the pericardium. The pericardium as two layers of fibrous tissue called the epicardium. This epicardium is the is the covering of the heart. The parietal pericardium covers the heart like a sac and allows the heart to beat. The heart is sometimes thought to be shaped like a triangle. Nurses use a stethoscope to listen to heart sounds when they are examining their patients. The medical term for the heart sounds is called apical heartbeat. Its called apical beat because the stethoscope is placed at the apex of the heart. …show more content…

It is nestled between the lungs and the mediastinum. Because of where the heart is located some can feel the heart with the palm of their hands if they apply pressure under the sternum. The heart delivers blood to our entire body. In order for the heart to pump efficiently it contracts and relaxes in intervals to allow the blood to be successfully pumped to all of the cells, organs and tissues. This is called systolic and diastolic pressure. Systolic is the heart contracting and diastolic is the heart at rest. The heart pumps by electrical impulses from cardiac muscle

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