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
The homeostatic imbalance that causes hypertension is a possible reaction to medication, or a shock. Also weight is a factor, and inactivity. Other factors are drinking and smoking. Internal and external stressors also affect homeostasis, which in turns causes Hypertension. The organ system it involves is the cardiovascular system.
HW Ch 16 - pp 517 thru 529, pp 533 thru 539 - psyc 107 Fall 2010 Multiple Choice Identify the choice that best completes the statement or answers the question. __D__ 1. The text defines stress as: a. the negative emotional responses people experience when they are threatened b. the increased arousal people experience when they are threatened c. any environmental event that produces elevated heart rate and blood pressure d. the physical and psychological reactions people have to demanding situations __A__ 2. Hans Selye introduced the model of stress reaction called the general adaptation syndrome (GAS). Selye was convinced that reactions to stressful situations: a. were general and nonspecific b. differed, depending on the type of stressor that was present c. were stronger when people had other physical illnesses d. differed, depending on the personality characteristics of the individual __A__ 3.
Chapter 16 Environment and Performance Matt Dornacker James Bronkowski Amanda Phillip Amanda Davila Samuel Pepe Objectives * The effects on the body due to temperature * How to maintain negative effects from the body’s temperature change * Information on frostbite and hypothermia * Effects of altitude on the body and trainging Matt Dornacker Strength and Conditioning Prof. Klecan 5/2/11 Regulating Temperature Objectives: 1. This will help you understand in detail how the body maintains its temperature. 2. This will also help you understand how individual differences in body type can influence your response to heat. 1.
Prevention and Treatment of Atelectasis What is atelectasis? Atelectasis is when the lung completely or partially collapses. It can develop in many respiratory problems. Atelectasis develops when the alveoli, which are tiny air sacs, within the lung do not inflate. Atelectasis affects the exchange of oxygen and carbon dioxide in your lungs, which can lead it to become a very severe problem if one develops it (Mayo Clinic Staff).
A relative humidity of 60% or more hampers sweat evaporation, which hinders your body's ability to cool itself. If you live in an urban area, you may be especially prone to develop heat stroke during a prolonged heat wave, particularly if there are stagnant atmospheric conditions and poor air quality. In what is known as the "heat island effect," asphalt and concrete store heat during the day and only gradually release it at night, resulting in higher night time temperatures. Those most susceptible (at risk) individuals to heat strokes include: a) infants and children up to age 4 b) the elderly (often with associated heart diseases, lung diseases, kidney diseases, or who are taking medications that make them vulnerable to dehydration and heat strokes), c) athletes d) individuals who work outside and physically exert themselves under the sun
What size metal duct should be used to deliver 270 CFM with a pressure drop of 0.15 in wc if the total equivalent length is 80 ft? (57.10) 8 in 5. What is the velocity of 500 CFM of air moving through a 10 in duct? (57.10) 900 fpm. 6.
Stress is a subjective experience between a person and their environment caused by stressors, for example, exams and relationships. There are many studies that have found that stress could actually affect the efficiency of the immune system. The immune system is a system of cells within the body that defends the body from antigens. White blood cells, also known as leucocytes, are the cells made in the bone marrow that defend the body against infection and illness. Most studies focusing on acute stressors have found a decrease in immune cell function while others have shown an increase, for example, Fischer (1972) found higher lymphocyte counts in Apollo astronauts during the splashdown, suggesting that acute stress could actually lead to an increase in immune system activity.
Controlling Rate of respiration Pre –lab Questions 1. What are the main differences in the composition of inhaled and exhaled air? Inhaled air contains more oxygen used to create energy and less carbon dioxide than exhaled air. Also, more carbon dioxide produced as a waste product of energy production and less oxygen as it has been used in respiration 2. What volume of air is exchanged at a normal, relaxed breathing rate?
Heart disease is known to be a consequence of any severe stressor that triggers the “fight or flight’ responses. What happens in these instances is the body, for lack of a better term, is constantly in an unnecessary mode of danger management. Coronary heart disease is very common in individuals that are commonly under constant stress. When a body becomes stuck in this mode it can be detrimental to health and wellbeing. “It's not good for your body to be in a constant state of danger management” (Geiger,