Exercise 4: Endocrine System Physiology: Activity 2: Plasma Glucose‚ Insulin‚ and Diabetes Mellitus Lab Report Pre-lab Quiz Results You scored 80% by answering 4 out of 5 questions correctly. 1. Which of the following statements is false? Your answer : c. Insulin decreases plasma glucose levels. Correct answer: d. Insulin is a hormone secreted into the stomach to aid with starch digestion. 2. Which of the following statements is true? You correctly answered: d. All of these statements are true. 3
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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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Why did the metabolic rates differ? Because of the different organs that were removed from the two other rats that would produce certain hormones 3. If an animal has been thyroidectomized‚ what hormone(s) would be missing from its blood? thyroxine 4. As a result of the missing hormone(s)‚ what would the overall effect on the body and metabolism be? Thyroxine wouldn’t be released which helps maintain metabolism and body. So 5. How could you treat a thyroidectomized animal so that it functioned
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membrane. How well did the results compare with your prediction? Glucose will diffuse through the 200 MWCO membrane because its MW is 180. The MW of the protein albumin is much greater than 200 so it will not diffuse through the 200 MWCO membrane. 4. Put the following in order from smallest to largest molecular weight: glucose‚ sodium chloride‚ albumin‚ and urea. Sodium chloride‚ urea‚ glucose‚ and albumin Simulated Facilitated Diffusion 1. Explain one way in which facilitated diffusion is
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PhysioEX notes Autorhythmicity- heart’s ability to trigger its own contractions Phase O- a lot like depolarization in neuronal action potentials. Sodium channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200
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4 Exercise Endocrine System Physiology Advance Preparation/Comments Consider covering the following topics to prepare students for the simulation: • Describe the regulation of thyroid hormone secretion. • Explain the relationship between the hypophysis (pituitary gland) and the hypothalamus. • Describe the synthesis of thyroid hormones‚ thyroxine and triiodothyronine. • Explain disorders that result in goiter formation. • Review the factors that contribute to bone density. • Explain the regulation
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fluid flow through the nephron? >>No! No urine was collected which indicates no fluid flows through the nephron. 3. What is the glomerular filtration rate? >>The glomerular filtration rate is 0 which means the glomeruli are not carrying out any filtration task. 4. How does it compare to your baseline data‚ and why? >>The glomerular filtration rate in baseline data is 124.99 which indicate functional glomeruli. The data support the concept that the reduction of
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LAB ONE: Exercise 4 – Endocrine System Activity 1: Metabolism and Thyroid Hormone Part 1: 1. The normal rat had the fastest basal metabolic rate. 2. The metabolic rates differed between the normal rat and the surgically altered rats because the surgically altered rats didn’t have a thyroid or pituitary gland and therefore‚ the normal rat had a faster basal metabolic rate. The results turned out to be the way I predicted them to be. 3. T3 and T4 would be missing in the animal’s blood
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Exercise 2: Skeletal Muscle Physiology: Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. During a single twitch of a skeletal muscle You correctly answered: b. maximal force is never achieved. 2. When a skeletal muscle is repetitively stimulated‚ twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. This phenomenon is known as
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NAME:____________________________ REGULATION REVIEW - HONORS [pic] ENDOCRINE SYSTEM 1. Explain how the endocrine system aids humans in maintaining homeostasis. 2. Consider the following diagram of the human endocrine system: [pic] a. Label each number with the appropriate term. b. Which numbered structure produces hormones that regulate blood sugar levels? c. Which numbered structure produces hormones that stimulate egg
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