Homeostatic Imbalances Essay

717 WordsAug 19, 20133 Pages
Unit 1. Assignment 1. Homeostatic Imbalances GE258 Samantha Seifert Date Due: 7/9/13 Homeostatic Imbalances Hypertension is also defined as high blood pressure. Blood pressure is the measurement of force against the walls of your arteries as the heart pumps blood through the body. A normal blood pressure is lower than 120/80 mmHg most of the time and when you have high blood pressure the measurements are at least 140/90 or higher the majority of the time. The cardiovascular system is affected by hypertension. The heart acts as a pump and forces blood into the arteries while the arteries are resisting the blood flow. (Medline Plus, 2013). The body has a special mechanism called homeostasis that’s responsible for maintaining internal stable conditions inside the body. When conditions change, the body tries to regulate its internal environment by using feedback systems. When dealing with hypertension the body uses a negative feedback system that regulates your blood pressure. A negative feedback system reverses a change in a situation that’s controlled. As shown in the book, a stimulus disrupts homeostasis by increasing the blood pressure. Then, the baroreceptors in certain blood vessels send nerve impulses to the brain (control center) and it interprets input and sends nerve impulses (output) to the organs that are affected (the heart and blood vessels), which decreases the heart rate and blood pressure. This process will eventually bring your blood pressure back to normal (Jenkins, Kemnitz, & Tortora, 2010). Negative feedback systems can’t maintain homeostasis. The body is always changing and therefore the body can’t stay at the same set point because the body is trying to constantly adapt to what’s going on in and outside of the body. Some causes of homeostatic imbalances with hypertension include low activity levels, weight, increased levels of salt

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