PhysioEx Exercise 4 Activity 1.pdf - PhysioEx Exercise 4 Activity 1 PhysioEx Lab Report Exercise 4 Endocrine System Physiology Activity 1 Metabolism and

PhysioEx Exercise 4 Activity 1.pdf - PhysioEx Exercise 4...

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1/17/2020PhysioEx Exercise 4 Activity 11/12PhysioEx Lab ReportExercise 4: Endocrine System PhysiologyActivity 1: Metabolism and Thyroid HormoneName: Brianna WeagleDate: 17 January 2020Session ID: session-3a93cd0e-e6ae-02f4-d979-77bf12b9b468Pre-lab Quiz ResultsYou scored 100% by answering 6 out of 6 questions correctly.Experiment ResultsPredict QuestionsWhich of the following statements about metabolism is false?You correctly answered: All of the energy from metabolism is ultimately stored in thechemical bonds of ATP.1Thyroxine isYou correctly answered: the most important hormone for maintaining the metabolic rateand body temperature.2Thyroid-stimulating hormone (TSH) isYou correctly answered: produced in the pituitary gland.3An injection of TSH to an otherwise normal animal will cause which of the following?You correctly answered: goiter development.4Thyrotropin-releasing hormone (TRH) isYou correctly answered: secreted by the hypothalamus.5Which of the following statements is true?You correctly answered: The hypothalamus primarily secretes tropic hormones thatstimulate the secretion of other hormones.6Predict Question 1: Make a prediction about the basal metabolic rate (BMR) of the remainingrats compared with the BMR of the normal rat you just measured.1
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1/17/2020PhysioEx Exercise 4 Activity 12/12Stop & Think QuestionsYour answer: The hypophysectomized (Hypox) rat's BMR will be higher than the normal rat'sBMR.Predict Question 2: What do you think will happen after you inject thyroxine into the threerats?Your answer: The normal rat will become hyperthyroidic and develop a goiter.2Predict Question 3: What do you think will happen after you inject TSH into the three rats?Your answer: The normal rat will become hyperthyroidic and develop a goiter.3Predict Question 4: Propylthiouracil (PTU) is a drug that inhibits the production of thyroxineby blocking the attachment of iodine to tyrosine residues in the follicle cells of the thyroidgland (iodinated tyrosines are linked together to form thyroxine). What do you think willhappen after you inject PTU into the three rats?Your answer: The normal rat will become hypothyroidic and develop a goiter.4Calculate the oxygen consumption per hour for this rat using the following equation.ml Oconsumed/1 minute x 60 minutes/hour = ml O/hourEnter the oxygen consumption per hour.You answered: 426 ml O/hr.1222Now that you have calculated the oxygen consumption per hour for this rat, you cancalculate the metabolic rate per kilogram of body weight with the following equation (notethat you need to convert the weight data from grams to kilograms to use this equation).
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