Powering the Human Body | Recource #1: Oxygen 1 | Resource #2: Water 2 | Resource #3:Food 3 | Functions | helps us convert food into energy in our cells, and to get rid of carbon dioxide | cushions and lubricates joints, nourishes and protects the brain, spinal cord and other tissues, keeps the body's temperature normal, and helps remove waste through perspiration, bowel movements and urination. | brings in the vitamins and minerals that are needed in our body to keep organs running. | Body Systems Involved | Respiratory, Cardiovascular | Endocrine, Urinary, Cardiovascular | Digestive, Cardiovascular | Environmental Factors | from the air we breath | from water sources, buy in stores, food | grow ourselves, buy, kill and cook. | Personal/Human Factors | can live 3 minutes without oxygen | can live 3 days without water | can live 3 weeks without food |

6.
127 Hours: Aron Ralston’s story of survival
"127 Hours: Aron Ralston's story of survival." The Telegraph. Telegraph Media Group, 6 Jan. 2011. Web. 5 Feb. 2014. .

Aron Ralston was a 35 year old man that had went hiking near Bluejohn Canyon. Long story short, as he was climbing, he accidentally dislodged a boulder and it fell down on top of his arm. For the first four days, he tried to somehow get his arm from under the boulder. On the fifth day, he had come to the conclusion that he would need to self-amputate it. After the amputation, he managed to get down to the bottom, one handed, and was then found by a family. Aron was stuck for five and a half days with only one bottle of water and two burritos. He managed to eat only bit by bit and take little sips, all spread out over those 5 days. There were many factors that were life threatening to Aron Ralston. First of all, he was stuck under a boulder. He could not move. So that right there threatened his life. Secondly, after the sun sets in the canyons, the temperature drops drastically. Assuming Aron didn’t bring thick jackets, he could have developed hypothermia. Third, Aron had very little to eat. If he had ended up eating and drinking all that he had brought with him, he would have probably died from lack of water. I liked this article. It included a couple quotes from Aron. The article went into depth about how everything happened. I thought the story sounded familiar to me and when it, in the article, said that the movie 127 Hours was based on it, it made much more sense. I never watched the movie but I’ve seen the trailer to it. I probably will watch the movie now.

Conclusion Questions
1.
Oxygen - Oxygen enables the cells of the body to release the energy stored as high-energy chemical bonds in our food, and enables them to use that energy to do what cells do, like keep us alive, heart beating, and brain sending signals. Every cell in the body needs oxygen in order to perform its part in order to keep us alive.
Water - Water is required for the distribution of nutrients, electrolytes, hormones, and other chemical messengers throughout the body, as well as the removal of waste products. Water is involved in cellular energy production and the maintenance of body temperature. It is also an important structural component of skin, cartilage, and other tissues.When we eat, breathe, and use our muscles, our body creates residue waste products that the body has to get rid of. Clean water helps us do this.
Food - The food you eat every day provides the nutrients you need to survive. Food gives your body is materials for growing and repairing tissue. Your body also needs energy to do anything. That energy comes from the foods we eat.

2. In time of limited body resources, the nervous system communicates to the brain the necessities and requirements of all other body systems. The brain, as the central command control center, decides what messages and signals to send to each system of the body depending on what each one needs. Like if the body is not receiving enough food to supply the body with the nutrients it needs, the brain tells the body to take the stored fat and use the nutrients from there.