Human Body

Human Body In the Beginning Within a month of conception, the cluster of cells that will, in the course of time, become a human being begins throbbing, signaling the development of a crude heart. Scarcely four weeks more pass before an complicated network of veins and arteries the size of a pea forms and subdivides into a footling replica of the four chambers that will one solar day make up the adult heart. As the fetus grows, so does its vitally important circulatory system.

Although most of the functions of the heart take in on dependent upon the mother throughout the entire pregnancy, in th e latter(prenominal) stages the organ becomes strong enough to beat on its own. field of view so, until birth the baby is cared for and nourished through the mothers placenta. An umbilical mussiness provides a supply line that furnishes food and oxygen for the baby, and likewise removes waste. When at last the birthing moment arrives, the baby emerges a separate individual; almost as soon as its first cries are sounded...If you want to get a make full essay, order it on our website: OrderCustomPaper.com

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