...Homeostasis is one of the twelve principles of biology. It is the constancy of the internal environment in a living organism in order to function properly. Homeostasis is maintained by a series of control mechanisms by using negative and positive feedbacks. This series is divided into three subunits: thermoregulation, osmoregulation and finally chemical regulation. Each one has its own role in keeping the living organism healthy and any sudden changes might lead to organ failures and consequently death. One of the most significant mechanisms of homeostasis is the regulation of body temperature (thermoregulation), which is restrained by the thermoregulatory center in the skin receptors. The hypothalamus as well as skeletal muscles, preserving a set point of 37.5 ± 0.5 °C (Core temperature) in most mammals. This is important for maintaining the enzyme at its optimum activity, where most of the life keeping metabolic reactions (for instance, Krebs cycle in respiration) are catalyzed by enzymes and as enzymes are affected by both temperature and PH, it will be life threatening to have any changes in temperature....
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...Homeostasis: Homeostasis is the tendency of the body to seek and maintain a condition of balance or equilibrium within its internal environment, even when faced with external changes. The importance of having blood glucose regulated in the human body is because glucose is a sugar needed by cells for respiration. It is important that the concentration of glucose in the blood is maintained at a constant level. Insulin, a hormone secreted by the pancreas, controls blood sugar levels in the body. Diabetes is a disorder in which the blood glucose levels remain too high. This is controlled to provide cells with a constant supply of energy. The blood sugar level is controlled by the release and storage of glucose, which is in turn controlled by a hormone called insulin. Here is an example of Homeostasis when blood glucose decreases. Insulin causes blood glucose levels to decrease, as would be expected in a negative feedback system. However if an animal has not eaten and blood glucose levels decrease, this is sensed in a different group of cells in the pancreas: the hormone glucagon is released, causing glucose levels to increase. Here is a picture of a Negative Feedback loop for blood glucose levels. Which explains the process mutch clearly. We can also see that the loops are the same but in one of the loops the glucose...
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...A system that regulates an internal setting as well as managing a stable, constant condition of properties is homeostasis; essentially its function is maintaining stability and balance in our bodies constantly. External things, such as medications, medical conditions, stress, our diet and what an individual’s sleep environment is like can create a negative impact one’s sleep-wake needs (Brain Basics: Understanding Sleep. (n.d.). Homeostasis fights these negative influences and does its best to keep our bodies in balance, such as our heart rate, breathing, body temperature and even our blood sugar levels. Fundamentally homeostasis keeps track of and triggers the body to sleep and determines the intensity of sleep (Brain Basics: Understanding...
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...Introduction Homeostasis refers to the relatively constant physiological state of the body despite fluctuations in the environment. A form of homeostasis is blood glucose regulation. Blood glucose (sugar) is a main energy provider for the body and allows energy to be available to cells. The concentration of glucose in the blood must be maintained at a constant level, 3.9-5.6mmol/1, in order for internal systems to function in the stable condition needed for survival. Stable blood glucose levels is especially important as it is essential for normal brain function as the brain can only use glucose or ketone bodies as a ‘fuel’/ energy provider. Over 60% of circulating blood glucose is used by the brain. Regulation of blood glucose occurs by...
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...Homeostasis is the ability to maintain a relatively stable internal environment despite changes in the surroundings. It depends on communication within the body. The two primary means of communication are through the nervous and endocrine systems. The nervous system can bring about quick responses to changes in internal and external conditions while the endocrine system produces hormones, which bring about slower and longer-lasting responses to change. The skin temperature is directly involved in control of the thermoregulatory effectors. Abundant nerves, blood vessels and eccrine glands within the skin’s deeper layer aid in thermoregulation (control of body temperature). The components of a homeostatic control system maintained by negative feedback mechanisms include a receptor, a control center and an effector. A receptor that sense the change in the internal or external environment When the receptor detects a change in some factor or event—some variable—it sends that information to the control center. (E.g. heat/cold) A control center that presumable compare sensed temperature to “normal temperature”. It determines the factor’s set point—the level or range that is normal for the factor in question. The control...
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...Concept of Homeostasis" from Anti Essays, your source for free research papers, essays, and term paper examples. Anatomy and physiology Describe the concept of homeostasis and the mechanisms that regulate the heart rate, breathing rate, body temperature. Explain the responses to changes in the body during exercise and explain the importance of homeostasis in maintaining the healthy function of the body. In order for the body to work efficiently it must maintain a constant internal environment. P5: Explain the concept of homeostasis Describe your understanding of homeostasis and the homeostatic mechanisms that regulate * Heart rate * Breathing rate * Body temperature M2: Discuss the probable homeostatic responses to changes in the internal environment during exercise. Even if you do not take regular exercise you will be aware of changes that occur in your body if you do anything strenuous. Even just running for the bus might make you gasp for breath, your heart to race and your body start to sweat. Discuss what is happening in the body when these changes take place. D2: Evaluate the importance of homeostasis in maintaining the healthy functioning of the body. Having said that the body must maintain a constant internal environment in order to function in a healthy manner, now give details why homeostasis is so important for the body. What would happen in your body if these mechanisms didn’t take place? Homeostasis Homeostasis is the...
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...abnormal conditions to normal conditions in the human body by maintaining homeostasis. The facets use the best in beauty; which includes the hair and nails. The other name for nails is the accessory structures of the skin. Therefore it is what makes...
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...equilibrium, homeostasis. Within this unit, we covered cell parts, cell transport, effect of energy drinks on cells, how the excretory system uses cell transport, and positive and negative feedback to keep the body at homeostasis. These concepts are covered in the Next Generation Science Standards (NGSS) High School Life Science (HS-LS) 1-1 A: Systems of specialized cells within organisms help them perform the essential functions of life and multicellular organisms have a hierarchal structural organization, in which any one system is made up of numerous parts and is itself a component of the next level. This is also covered in HS-LS 1-3.A: Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and function even as externa conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is on inside the living system. There are several learning targets for students in this unit: 1-identify and describe the functions of each organelle, 2-identify and describe the functions of the cell membrane, 3- describe how substances move across the cell membrane, 4: explain how the kidney uses cell transport 5- to plan and conduct an investigation to provide evidence of how energy drinks affect the fluid balance within cells, and 6- to describe positive and negative feedback mechanisms for maintaining homeostasis. Homeostasis, the ability...
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...Kidney Stones This is a research paper on Kidney Stones, also called nephrolithiasis. Kidney Stones are apart and family of the Excretory system. This can happen to anyone and may or may not affect you or your loved ones one day. This may be deadly for some people so I am here to inform you of ways to treat it and avoid it in any possible way. Anything helps when you are desperate with painful stones in your body. There are certain ways to get kidney stones and certain ways to treat them as well. They are treatable. This is not something you have to live with your whole life living in when having quick access to medical treatment. Kidney stones is a painful disease to have. Sometimes the stone is too big to pass so they have to break it up...
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...Nursing Philosophy and Comparison Paper A Comparison of Personal Philosophy and Sr. Callista Roy’s Adaptation Model September 14, 2011 Nursing Philosophy and Comparison Paper A Comparison of Personal Philosophy and Sr. Callista Roy’s Adaptation Model A personal philosophy is what one values for themselves as human beings. It reflects the many faceted realities of their self-concept and is influenced by: culture, spirituality, morals, values, and belief concepts. The relevance of one’s personal philosophy to nursing is significant. One’s philosophy directly affects the interpersonal relationship and care given to patients. For the purpose of this paper, the author will reflect and incorporate her nursing philosophy with the four nursing metaparadigms: person, environment, health and nursing, with the Roy Adaptation Model (RAM) and compare similarities’ and differences. Personal Philosophy The author’s personal philosophy is seeded in spirituality and seeing the world as interconnected with a divine source where all things are possible. She attempts to integrate the core concepts of her philosophy: intuition, altruism, holism, empathy, knowledge, compassion and advocacy into the nursing process. The author will define and demonstrate her nursing philosophy as applied to the metaparadigms. The person is viewed as a unique individual and energetic being (spirit) within a physical and integrated body system connected to a higher supreme source; environment:...
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...split the reserves of the glycogen energy into sugar particles so as to use them as a quick source of energy for the body and to maintain the levels of the sugar in the body. Finally, Bernard discovered the control of the vasomotor nerves on the blood vessels, and how it responds to the changes in the temperatures while operating in an environment. With this the Bernard was able to advance his work on blood vessels and tried to understand the ability of the body to constantly maintain the internal temperature. This led him to formulate the ideas in relation to the constancy of the internal environment of the body. In the 19th century his concept of constancy of the internal environment (milieu interieur) was officially presented. In this paper, we are going to analyze the statement made by Claude Bernard in 19th century- “The constancy of the internal environment is the condition for a free and independent life.” and we will relate this statement to the life processes and the other important...
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...consume and transform energy. Subdisciplines of biology are recognized on the basis of the scale at which organisms are studied and the methods used to study them: biochemistry examines the rudimentary chemistry of life; molecular biology studies the complex interactions of systems of biological molecules; cellular biology examines the basic building block of all life, the cell; physiology examines the physical and chemical functions of the tissues, organs, and organ systems of an organism; and ecology examines how various organisms interact and associate with their environment.[3] Contents [hide] * 1 History * 2 Foundations of modern biology * 2.1 Cell theory * 2.2 Evolution * 2.3 Genetics * 2.4 Homeostasis * 2.5 Energy * 3 Research * 3.1 Structural * 3.2 Physiological * 3.3 Evolutionary * 3.4 Systematics * 3.5 Ecology * 4...
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...Stem Cell Research Paper Stem Cell Research Paper Human Biology The human body is capable of many miraculous feats. Every hour, every minute, every second, millions of cells are working to maintain homeostasis within the body. This paper is going to focus on one type of cell in particular, the stem cell. The properties of this little cell are amazing. These unique cells self-regenerate through cell division, and in addition to being unspecialized, have the ability to develop into many different specialized cells of the body. Numerous studies have shown the potential of stem cells to cure cancers, as well as slow or reverse the damages of some neurological disorders, yet stem cell researchers have met with both public and legal resistance during their attempts to show the incredible usefulness of these cells. Therefore, the question is, with stem cell research showing the potential to reverse the damage from or slow the progression of neurological disorders, and possible cures for cancer and other diseases and disorders are the possible benefits too much to ignore? The ability to self-regenerate is one the things that makes the stem cell such an appealing area to study. Most cells and organs in the body do not have the ability to self-regenerate, nor self-repair but stem cells can do both. Stem cells themselves are unspecialized, in that they have so special function (Stem Cell Basics, 2009). Part of the beauty of the stem cell is that through cellular...
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...Organizational Behavior Terminology and Concepts Paper L. M. MGT/307 February 6, 2012 Organizational Behavior Terminology and Concepts Paper Although the study of organizational behavior is a fairly new concept to me, I have found it to be quite interesting as well as important for businesses, and organizations to survive. Organizational behavior bases its premises on the study of individuals and their actions within the context of their organization. OB is also an interdisciplinary field, which includes the study of sociology, psychology, communication, and management (Schemerhorn, Hunt, & Osborn, 2008.) The goals of OB are to help an organization function properly by addressing the problems/and concerns of the said organization as well as providing the necessary solutions needed to bring the organization back to homeostasis. Understanding the importance of culture and its influences on workplace behavior can be seen as one major element of maintaining homeostasis in any profession (Janicijevic, Apri.) Organizational Culture is the system of assumptions, values, norms, and attitude, manifested through symbols, which members of one organization have developed and adopted through mutual experience and which help to determine the meaning of the world surrounding them and how to behave in it. Classifying organizational culture into two large groups of elements, which can be observed is cognitive (assumptions, values, norms, and attitude) symbolic elements which...
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...1 - 3 (P1,P2,P3)You are working in a health clinic and have been asked to produce a poster to explain the functions of the main cell, tissue and body components to display in the clinic. Task 4 (P4,M1,D1)You are an advisor in your local sports centre and you have been asked to design and produce an information booklet to explain to clients how the body requires and utilises energy. This should include:Produce a written report on the body’s response to exercise. The report will be based on primary and secondary research. The report will include:Task 5 (P5,M2,D2) 1. An explanation of the concept of homeostasis and its role in exercise and healthy functioning of the body. 2. Measurements collected from practical work involving physical activity and your interpretation of them together with comments on the validity of the data collected.Task 6 (P6)Complete exercise programme and complete data form and graphs sheets | The Brief | Task 1 (P1)Using a large piece of paper, produce an annotated poster of a cell as it is seen under the microscope. You must include the following; * Organelles – nucleus, cytoplasm, mitochondria, smooth and rough endoplasmic reticula * Golgi apparatus * LysosomesThe notes accompanying the labels should include the main activities carried out by the organelles. Cells: cell membrane, nucleus, cytoplasm; organelles – mitochondria, endoplasmic reticulum (smooth and rough), Golgi apparatus, lysosomeTask 2...
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