(Solved) Physio Ex 9.0 exercise 4 activity 1

Review Sheet Results
1. Part 1: Determining the Basal Metabolic Rates
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 hypophysectomized, what effect would you expect to see in the hormone levels in its body?

5. Part 2: Determining the Effect of Thyroxine on Metabolic Rate What was the effect of thyroxine injections on the normal rat's BMR?

6. What was the effect of thyroxine injections on the thyroidectomized rat's BMR? How does the BMR in this case compare with the normal rat's BMR? Was the dose of thyroxine in the syringe too large, too small, or just right?

7. What was the effect of thyroxine injections on the hypophysectomized rat's BMR? How does the BMR in this case compare with the normal rat's BMR? Was the dose of thyroxine in the syringe too large, too small, or just right?

8. Part 3: Determining the Effect of TSH on Metabolic Rate
What was the effect of thyroid-stimulating hormone (TSH) injections on the normal rat's BMR?

9. What was the effect of TSH injections on the thyroidectomized rat's BMR? How does the BMR in this case compare with the normal rat's BMR? Why was this effect observed?

10. What was the effect of TSH injections on the hypophysectomized rat's BMR? How does the BMR in this case compare with the normal rat's BMR? Was the dose of TSH in the syringe too large, too small, or just right?

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Physio Ex 9.0 exercise 4 activity 1

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