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The Human Anatomy and Possible Threats

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Cellular metabolism also enables processes like respiration and the disposal of waste products from the body. All the energy that is produced and consumed in the body is sourced from cellular metabolism. Human beings and animals rely on aerobic respiration to satisfy their energy needs (Wolfsthal, 2008). Kazer and Grossman (2008) define homeostasis as the ability of the body to regulate its temperature level. The temperature of the blood and water that passes through the body is recorded by the hypothalamus in the brain (Kazer, and Grossman, 2008)). It, in turn, sends back signals to the rest of the body so that it can maintain a stable temperature (Anderson-Gold, and Muchnik, 2010).

When the body feels cold, blood vessels constrict to keep heat in. This leads to shivering in order to warm up the body. In case of hotness, the blood vessels dilate to allow heat out through radiation. Kidneys are fitted with nephrons that enable it to maintain a stable level of water in the body (Kazer and Grossman, 2008). When the water level is above the normal level, the kidneys will release excess water and the person will urinate.

On the other hand, if the person is dehydrated, the kidneys will strive to hold more water in the body. The lung also comes in handy in the elimination of waste products from the body system. The lung maintains the level of oxygen, carbon dioxide, and the acid-base balance (Wolfsthal, 2008). The basic drive is the removal of carbon dioxide through its role in blood pH. As carbon dioxide increases, it combines with water to form hydrogen ions and bicarbonate ions.

Consequently, an increase in acid increases the rate of breathing (short-term regulation). The endocrine system is an enormous system, which is composed of various organs throughout the body (Anderson-Gold, and Muchnik, 2010). Its primary role is to produce hormones, which act on organs throughout the body. The hormones are secreted to regulate the functioning of the organs all over the body.

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preview essay on The Human Anatomy and Possible Threats
  • Pages: 12 (3000 words)
  • Document Type: Essay
  • Subject: Biology
  • Level: Undergraduate
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