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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Most theories on the pathophysiology of depression are based on measurement of indirect markers‚ neuro-imaging techniques‚ and post-mortem studies. Studies show that depression starts with abnormalities in the areas of the brain that are responsible for reward response‚ mood regulation‚ and executive functions. The neuro-imaging and post-mortem studies have indicated morphological changes shown by reductions in grey-matter volume and glial density in the prefrontal cortex and the hippocampus‚ which
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Chronic pancreatitis pathophysiology is unclear. However‚ Long tern alcohol use causes hypersecretion of protein in pancreatic productions‚ this then causes protein plugs and calculi to form inside the pancreatic channels. Therefore‚ alcohol abuse has a direct poisonous impact on the cells of the pancreas. Subsequently‚ patients with eating regimens such as low protein and high or low in fat are more at risk. Smoking is another aspect on the improvement of chronic pancreatitis (J V. Tsirambidis‚
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he pathophysiology of ADHD is unclear and there are a number of competing theories.[87] Research on children with ADHD has shown a general reduction of brain volume‚ but with a proportionally greater reduction in the volume of the left-sided prefrontal cortex. These findings suggest that the core ADHD features of inattention‚ hyperactivity‚ and impulsivity may reflect frontal lobe dysfunction‚ but other brain regions particularly the cerebellum have also been implicated.[88] Neuroimaging studies
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PATHOPHYSIOLOGY OF PEPTIC ULCER DISEASE Definition: Peptic ulcer disease is an excavation (hollowed-out area) that forms in the mucosal wall of the stomach. Erosion of a circumscribed area of mucous membrane is the cause. Predisposing Factors Precipitating Factors ➢ Age (40-60) > Malignant tumors ➢ Gender > Gastric Hyperacidity
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PATHOPHYSIOLOGY OF MYOCARDIAL INFARCTION Mechanisms of Occlusion Most MIs are caused by a disruption in the vascular endothelium associated with an unstable atherosclerotic plaque that stimulates the formation of an intracoronary thrombus‚ which results in coronary artery blood flow occlusion. If such an occlusion persists long enough (20 to 40 min)‚ irreversible myocardial cell damage and cell death will occur.5 The development of atherosclerotic plaque occurs over a period of years to decades
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Pathophysiology Infection and inflammation of the kidneys is called pyelonephritis. Pyelonephritis is a type of urinary tract infection. E. coli is the most common microbe that causes pyelonephritis. It usually begins in the urethra or bladder and travels to the kidneys. There is a chance of it spreading to the calyces and medullary tissues such as the tubules of the nephrons. If not treated the glomeruli will also be infected and inflamed. (Bullock & Hales 2013). There is both acute pyelonephritis
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causes such as arrhythmia or myocardial infarction. Mr. KH ’s presentation during the attack was also consistent with criteria and symptoms of situational syncope‚ specifically cough syncope. Syncope is classified according to its suspected pathophysiology as follows: Neurally-mediated reflex syncopal syndrome referring to a reflex that‚ when triggered‚ gives rise to vasodilation and bradykardia (1) Orthostatic syncope occurring when the autonomic nervous system is incapacitated resulting
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HCR240 Human Pathophysiology Lesson 1 Quiz This assignment is worth 40 points. Please make sure you have answered all questions prior to submitting. Once you click the submit button‚ you will not be able to return. Question 1 of 40 A 9-year-old patient is admitted to a pediatric unit with Duchenne muscular dystrophy. Which of the following traits was this condition inherited from? Sex-linked dominant Sex-influenced Sex-limited Sex-linked recessive Question 2 of 40 A 70-year-old
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Intensive and Critical Care Nursing (2008) 24‚ 28—40 ORIGINAL ARTICLE Pathophysiology of acid base balance: The theory practice relationship Sharon L. Edwards ∗ Buckinghamshire Chilterns University College‚ Chalfont Campus‚ Newland Park‚ Gorelands Lane‚ Chalfont St. Giles‚ Buckinghamshire HP8 4AD‚ United Kingdom Accepted 13 May 2007 KEYWORDS Acid base balance; Arterial blood gases; Acidosis; Alkalosis Summary There are many disorders/diseases that lead to changes in acid base balance
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