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Use examples to explain how body systems interrelate with each other

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Introduction

D1 Use examples to explain how body systems interrelate with each other The writer is using two scenarios to explain how body systems interrelate with each other. Karen started training for the London marathon and suddenly discovered that she was always hungry and her cheeks developed a pink complexion. Michael is a reasonably fit 18-year-old student but he finds that he gets out of breath when running to catch the bus because he was late getting up. Karen is experiencing the long term effects of regular exercise; Karen has developed a pink complexion due to vasodilation. This is when the veins carrying warm blood back to the heart divert the blood nearer the skins surface. This heat is then lost through radiation through the skin. Karen is finding that she is hungry more often as the energy provided by the food she consumes is used mostly by her muscles to supply the body with continuous movements. Keeping fit helps to prevent major diseases that develop with age. ...read more.

Middle

It can also lower blood pressure, build stronger bones, improve muscle strength and flexibility, lessen depression and help control weight. Aerobic exercise includes walking, running, hiking, bicycling, swimming, cross-country skiing, stair climbing, rowing and many other activities. During vigorous exercise such as Karen the circulatory system may not be able to supply enough oxygenated blood to the muscle cells and therefore they will stop contracting efficiently. Anaerobic respiration is used by the cells to release more energy. This type of respiration is without oxygen. Anaerobic respiration does not break down the glucose completely; therefore much less energy is released than in aerobic respiration. Cramps may occur due to the poisonous production of lactic acid. After exercise the individual continues to pant in order to supply more oxygen to oxidise the lactic acid. Michael is experiencing the short term effects of exercise, due to this within his body Michael needs much more oxygen to cope with the exercise. To produce the large volume of oxygen which the lungs needs he is breathing faster and deeper. ...read more.

Conclusion

The blood is helped back to the heart by veins which are squeezed by contracting muscles. This causes adrenaline to be released which makes the cells in the body burn up more oxygen. When sweating and exhaling excess heat and H2O are eliminated from the body, the blood carries away these waste products from the cells in the muscles this causes breathe to be hot and moist during exercise. The rib cage, sternum and diaphragm work harder in expanding and reducing the lungs in order to get oxygen in and carbon dioxide out, the breathing rate increases during exercise. The heart beats faster and pumps blood around the body faster, the heart fills up with more blood and this is squeezed out with each contraction of the muscles in the heart. The heart rate and blood pressure increase during exercise. Those exercising go red as the veins in their body are carrying warm blood back to the heart and divert the blood nearer the skins surface. This heat is then lost through radiation through the skin. ?? ?? ?? ?? Unit 10 ...read more.

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