1. Which rat‚ A‚ B or C has no thyroid gland? Rat A (1 pts) 2. Justify your answer. (what data convinced you of your answer) (1 pts) T3 and T4 regulate the metabolism‚ so when more is available it increases the baseline metabolic rate. TSH causes the release of T3 and T4‚ so if the rat is injected with TSH‚ in theory we would suggest that the levels of T3 and T4 are also higher than the baseline metabolic rate. 3. In a further experiment‚ all 3 rats were given a drug that inhibits the production
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Predict Question 1: The BMR of both remaining rats will be lower than the normal rat’s BMR Predict Question 2: The normal rat will become hyperthyroidic but will not develop a goiter. Predict Question 3: The normal rat will become hyperthyroidic and develop a goiter. Predict Question 4: The normal rat will become hypothyroidic and develop a goiter. Chart 1: Effects of Hormones on Metabolic Rate Normal rat Thyroidectomized rat Hypophysectomized rat Baseline Weight (g) Variable‚ 249–251 Variable‚ 244–246
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Lab 1 – Exercise 4: Endocrine System ACTIVITY 1: Metabolism and Thyroid Hormone Part 1: Chart 1: Effects of Hormones on Metabolic Rate Normal Rat Thyroidectomized Rat Hypophysectomized Rat Baseline Weight Ml O2 used in 1 minute Ml O2 used per hour Metabolic rate Palpation results 250 grams 7.1 ml 426ml 1704 ml O2/kg/hr NO MASS 245 grams 6.3 ml 378 ml 1542.86 ml O2/kg/hr
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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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following statements about metabolism is false? You correctly answered: d. All of the energy from metabolism is ultimately stored in the chemical bonds of ATP. 2. Thyroxine is You correctly answered: c. the most important hormone for maintaining the metabolic rate and body temperature. 3. Thyroid-stimulating hormone (TSH) is You correctly answered: b. produced in the pituitary gland. 4. An injection of TSH to an otherwise normal animal will cause which of the following? You correctly answered: d. goiter
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Part 1 Answers 1. The baseline metabolic rate (BMR) of the normal rat was approximately ________ ml O2/kg/hr. 426 2. True or False: The BMR of all three rats was approximately the same before treatment with thyroxine‚ TSH‚ or propylthiouracil. true 3. Which rat had the fastest basal metabolic rate (BMR)? normal 4. Why did the BMR’s differ between the normal rat and the surgically altered rats? Because the metabolism of the normal rat was normal. The Tx and Hypox rats’ metabolism was altered
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Time/Date: 7:00 PM/Wednesday Activity 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? The normal rat had the faster basal metabolic rate‚ because it was not missing its pituitary gland or its thyroid gland. 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? The normal rat has the highest BMR because it has the glands required to stimulate and regulate the
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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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PHYSIOEX 9.0 REVIEW SHEET EXERCISE 4 Endocrine System Physiology NAME ___ LAB TIME/DATE ___ ACTIVITY 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? ___ ___ 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? ___ ___ ___ 3 If an animal has been thyroidectomized‚ what hormone(s) would be missing in its blood? ___ ___ 4 If an animal has been
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Birmingham‚ AL 35294‚ USA Abstract $watermark-text The incidence of type 2 diabetes and metabolic disease is rapidly increasing‚
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