Exam (elaborations)
SCIENCE NR 228 WEEK 1 DISCUSSION (GRADED A+)
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- Chamberlain College Of Nursing
SCIENCE NR 228 WEEK 1 DISCUSSION (GRADED A+)/SCIENCE NR 228 WEEK 1 DISCUSSION (GRADED A+)
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Let’s follow the path of a delicious ham and cheese sandwich with lettuce and pickles as it is eaten and digested! Start at the beginning and discuss the anatomical parts as well as the biochemical roles that contribute to this sandwich being turned into chemical energy. Be sure to include mechanical and chemical mechanisms, along with how they are metabolized in the body!What happens if one part does not function? For example, what happens to digestion if the person is missing many teeth but can't afford dentures or perhaps has a digestive disorder?
1.What stress factors may cause issues in the digestive tract for some people?
2.How can a regular exercise program aid in the development of a healthy digestive tract?
3.How might digestion and metabolism be different over the life span?
As we eat, the organs of the digestive system form the gastrointestinal track (GI) to create an open tube that runs from our mouth to the anus (Grodner, Roth, Walkingshaw,
2007). The chemical breakdown of food particles from the digestive organs are being used by various cells within the body to function properly. Digestion begins with the mouth. The stimulation of food in the mouth is done by chemical and mechanical digestion. Chemical digestion occurs through saliva and amylase that begins the digestive process of starches. Mechanical digestion depends on teeth and tongue that also occur in the mouth. Teeth help to tear and pulverize food, and tongue assists food into chewing positions and helps pulverized food to send into the esophagus (Grodner, Roth, Walkingshaw, 2007). When the food is taken into the mouth, the teeth or the mouth help food to breakdown with the help of enzymes called salivary amylase. For example, when the ham and cheese sandwich is taken, the amylase and mucous membrane chemically altered the sandwich so that it would be easier to pass the food through the esophagus. When the food reaches the esophagus, the bolus that was formed by the mucous membrane is propelled by a movement called peristalsis (Ramsay & Carr, 2011). From esophagus, the bolus is sent through the cardiac This study source was downloaded by 100000813627628 from CourseHero.com on 06-06-2021 03:46:49 GMT -05:00
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shared via CourseHero.com sphincter to the stomach. The primary function of the stomach is to prepare food for digestion and absorption by the intestine (Ramsay & Carr, 2011). The stomach glands secrete mucous to protect the stomach linings from ulcers. In the stomach, the food is reduced to chyme or solid substance. After that these substances enters the small intestine and large intestine. The small intestine produces digestive enzymes to further breakdown the food and nutrients and chymes are prepared for absorptions. The small intestine is the major organ for digestion and the final stage of digestive process. In this organ, the most of the chyme is absorbed, and the remaining minerals, water, and fibers
are sent into the large intestine. In the large intestine, final absorption of any available nutrients takes place, and it removes water and electrolytes. Lastly, the waste products are stored in the rectum and eliminated through the anus. If the person is missing many teeth but can't afford dentures or perhaps has a digestive disorder, he/she is unable to break down certain carbohydrates, fruits and vegetables, and other essential nutrients because chewing of food is required to produce enough produce saliva in the mouth. Without teeth, people have changes in food preferences and subsequent nutrient deficiencies which results in illnesses and GI disturbances. Stress can affect digestion and cause digestive diseases. Stressful situation activates flight or fight response in our CNS (central nervous system) and effect blood flow, contractions of digestive muscles, and decreases secretions that are needed for digestion of food. Stress also causes inflammation of GI system and makes individuals vulnerable to infection (Grodner, Roth, Walkingshaw, 2007). Exercise is important for our overall health. Regular exercise improves blood flow throughout the body including This study source was downloaded by 100000813627628 from CourseHero.com on 06-06-2021 03:46:49 GMT -05:00
https://www.coursehero.com/file/20428938/Week-1-discussion/This study resource was
shared via CourseHero.com
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