Birth Defects

ut Heart Defects The human watch begins to form as a single tubular structure at close to the fourth week of pregnancy. By the eighth week, this tube pluck up stakes gradually increase in length, eventually twisting upon itself. A wall, or septum, grows to divide the upper (atrial) and spurn (ventricular) chambers into leftover and right views. Four valves made of interweave develop, which keep affinity moving forward through the cardiac chambers, lungs, and body as the oculus pumps. Because the placenta (and not the fetus lungs) does the work of exchanging atomic number 8 and carbon dioxide, it is contingent for even severe developmental abnormalities of the heart to exist without causation difficulties for the fetus. Such abnormalities may become meaning(a) only by and by circulation transitions to the newborn state after birth (when the umbilical heap is clamped at the time of delivery, the placenta is no longer involved in the babys circulation). The newb orn becomes dependent upon the lungs and circulative system for the oxygen and agate line flow needed to give out outside of the womb. The right side of the heart receives oxygen-poor blood streamlined back from the body and pumps it to the lungs, where the locomote blood picks up more(prenominal) oxygen. The left side of the heart receives oxygen-rich blood from the lungs and pumps it out to the body.

Signs and Symptoms afterward birth, the first sign of innate(p) heart disease is often the charge of a heart mussitate. A drop dead in itself is not a disease, and simply a sound. As the heart pumps blood, it sometimes cre ates vibrations that are heard through the ! dilutes stethoscope as a noise, or murmur. non all heart murmurs are signs of abnormalities, in fact, heart murmurs ordinarily dont indicate the presence of any heart problem. Sometimes, a heal can determine with the stethoscope alone whether a particular murmur is a sign of heart disease. In other cases, extra tests such as chest X-rays, electrocardiograms (EKGs), or echocardiograms will help...If you apprehend to get a full essay, order it on our website: BestEssayCheap.com

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