feedback which ensures that‚ in any control system‚ changes are reversed and returned back to the set level. There are four different homeostatic mechanisms for regulation these four are the heart rate‚ breathing rate‚ body temperature and blood glucose levels. Negative feedback system is made out of receptors to detect change‚ a control centre to receive the information and process the response and effectors to reverse the change and re-establish the original state. (Anatomy & Physiology‚ 2013)
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regulates the level of glucose in your blood. Glucose is a simple form of sugar found in foods and sugary drinks. It’s absorbed by your body as a natural part of digestion and is carried around your body in your blood. When glucose reaches your body tissues‚ such as muscle cells‚ it’s absorbed and converted into energy. Insulin is secreted into your blood by your pancreas‚ which is a gland located behind your stomach. If your cells don’t respond properly to insulin‚ it can cause glucose to build up in your
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Alimentary System 1.1 – The burden of GI diseases • List the names of the organs of the alimentary tract • Mouth and Oesophagus • Stomach • Liver • Biliary system • Pancreas • Small intestine (consisting of duodenum‚ jejunum and ileum) • Large intestine (consisting of colon‚ rectum and anus) • Describe the symptoms and signs of alimentary tract disease Symptoms: General: • Anorexia • Weight loss • Anaemia
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Type 2 diabetes is a condition where the body doesn’t produce enough insulin‚ or simply the cells in the body does not recognize the insulin that are present but both have the same result of having high levels of glucose in the blood. This effects the way the body regulates sugar (glucose)‚ the main source of energy required for our bodies to function. Type 2 diabetes can develop slowly over a long period of time and occurs mostly to the elderlies but over the past few years‚ type 2 diabetes is becoming
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Physiology Lab Review Questions for Final 7.2: Electrocardiogram (ECG) 1. The pacemaker region of the heart is the right atrium (SA node) ____________________________. 2. The conducting tissue of the heart located in the interventricular septum is the right and left bundle branches 3. Indicate the electrical events that produce each of these waves: a. P wave __atrial depolarization________________________________________________________. b. QRS wave __ventricular depolarization_________________________________________________
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Insulin-Dependent Diabetes Mellitus Etiology of Diabetes Mellitus “Diabetes is a group of metabolic diseases characterized by hyperglycemia resulting from defects in insulin secretion‚ insulin action‚ or both. The chronic hyperglycemia of diabetes is associated with long-term damage‚ dysfunction‚ and failure of different organs‚ especially the eyes‚ kidneys‚ nerves‚ heart‚ and blood vessels.” (Association‚ National Center for Biotechnology Information ‚ 2009‚ p. 1) “The cause of type 1 and
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Unlike prokaryotic cells‚ eukaryotic cells have internal membranes‚ which surround their organelles. Which structure surrounds all cells? Plasma membrane A defining feature of biological membranes is the presence of which of the following? A lipid bilayer Order the following substances according to how easily they can cross the lipid bilayer of the plasma membrane without the help of transport proteins. List the substances that cross most easily first. Nonpolar molecules Polar molecules Ions
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pressure Regulating plasma concentrations of sodium‚ potassium‚ chloride‚ and other ions Stabilizing blood pH Conserving valuable nutrients Removing drugs and toxins from the bloodstream Explain the functions of the components of a nephron‚ and relate those functions to cellular and histological specializations. Segment General Functions Specific Functions Renal Corpuscle Filtration of plasma; generates approximately 180 L/day of filtrate similar in composition to blood plasma but without proteins
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of this particular experiment is to gain knowledge on diffusion across a plasma membrane‚ which is selectively permeable. Diffusion is the movement of a substance from a region of high concentration to lower concentration. Experiment 2 was performed to see how the substance’s‚ starch‚ and diffusion process across a plasma membrane is affected by amylase. We prepared a simulated digestive tract of a caterpillar‚ as the plasma membrane‚ to see if the amylase breaking down the cooked starch affected
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Another word for "fats." Lipids can be more formally defined as substances such as a fat‚ oil or wax that dissolves in alcohol but not in water. Lipids contain carbon‚ hydrogen and oxygen but have far less oxygen proportionally than carbohydrates. They are found in places as diverse as egg yolks and the human nervous system and are important component of plant‚ animal and microbial membranes A fatty or waxy are organic compound that is readily soluble in nonpolar solvent (e.g. ether)
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