open them anymore or reopen them before depolarization. This is due to the refractory period. 3) Why is it only possible to induce an extrasystole during relaxation? Because cardiac muscle is able to depolarize after repolarization takes place. 4) Explain why wave summation and tetanus are not possible in cardiac muscle tissue. How well did the results compare to your prediction? Cells do not show tetanus or summation because cardiac cells have both long action potentials and long twitches. Activity
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1 Western Governors University 2 Hereditary Fructose Intolerance Metabolism is the process of cellular respiration. It involves three steps‚ 1) glycolysis‚ 2) the citric acid or Krebs cycle and 3) electron transport system. The glycolytic pathway or glycolysis is a metabolic process that leads to the formation of the energy source adenosine triphosphate (ATP) in the body. ATP is essential to the cell and the cellular processes used by the cell. The first step‚ glycolysis is the process
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Plant hormones are specialized chemical substances produced by plants. They are the main internal factors controlling growth and development. Hormones are produced in one part of a plant and transported to others‚ where they are effective in very small amounts. Depending on the target tissue‚ a given hormone may have different effects. Plant hormones play an integral role in controlling the growth and development of plants. A plant hormone is generally described as an organic compound synthesized
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Lab 1 – Exercise 4: Endocrine System Name: Kathryn Marso ACTIVITY 1: Metabolism and Thyroid Hormone Part 1: Chart 1: Effects of Hormones on Metabolic Rate | | Normal Rat | Thyroidectomized Rat | Hypophysectomized Rat | BaselineWeightMl O2 used in 1 minuteMl O2 used per hourMetabolic ratePalpation results | 250.9 grams 7.1 ml 426 ml 1697 ml O2/kg/hr | 245.7 grams 6.2 ml 372 ml 1514 ml O2/kg/hr | 244.6
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Thyroid Clinical Case Study 1. The thyroid gland is part of and a major organ of the endocrine system. This gland is composed of two cone-like lobes connected together forming a butterfly shape ( shown in figure 1).The isthmus is a thin band of connective tissues which connects the two lobes of the thyroid gland is located between the pyramidal lobe and the trachea. (Cohen and Wood 2000) The thyroid gland is situated on the anterior part of the lower neck‚ below the larynx (voice box) and
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The QALMRI Method Explanation of writing a QALMRI The information you are trying to convey in writing your final project is the same as the information you are trying to extract from journal articles that you read. The QALMRI method highlights this important information as: What are the broad and specific questions?‚ what were the alternative hypotheses‚ what was the logic of the design‚ what was the method‚ what were the results‚ what inferences about the specific and broad question can be made
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Thyroid Cancer Thyroid cancer is a cancerous tumor or growth located within the thyroid gland.Thyroid cancer is the most common endocrine cancer. Thyroid cancer is one of the few cancers that has increased in incidence rates over recent years. It occurs in all age groups from children through seniors. The American Cancer Society estimates that there will be about 62‚450 new cases of thyroid cancer in the U.S. in an average year. Of these new cases‚ about 47‚230 will occur in women and about
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What is metabolism? All living things must have an unceasing supply of energy and matter. The transformation of this energy and matter within the body is called metabolism. Metabolism includes two different types: catabolism and anabolism. Catabolism is destructive metabolism. Typically‚ in catabolism‚ larger organic molecules are broken down into smaller constituents. This usually occurs with the release of energy. Anabolism is constructive metabolism. Typically‚ in anabolism‚ small precursor
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EXERCISE 9: RENAL SYSTEM PHYSIOLOGYHere is 9 got 95% Still need help on final 132 | ACTIVITY 1: The Effect of Arteriole Radius on Glomerular Filtration Answers 1. According to your lab manual‚ in humans the glomerular filtration rate (GFR) ranges from _____ to _____ ml/minute. 80 140 2. When the radii of both the afferent arteriole and efferent arteriole were set at 0.45mm‚ the GFR was approximately ______ ml/minute. a. 40 b. 60 c. 80 d. 120 C. 3. True or
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Homework Zero 0. What do you hope to achieve in this course? I have taken economics courses in the past‚ but was never strong with the math equations. I am excited to improve this weakness of mine. 1. What skills do you bring to the classroom? To your fellow students? Although I was an economics major in undergrad‚ I took many computer classes and as a result am very proficient with computers. I can use these skills when working with classmates as well. 2. How will your classmates
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