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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Jazmine_Ilene Jazmine_Ilene
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12 years ago
help! im stuck  Frowning Face

1) In activity 1, the basal metabolic rate (BMR) for the normal rate is _____________ml O2/kg/hr, for the thyroidectomized rat is ________________ ml O2/kg/hr, and for the hypophysectomized rat is __________________ ml O2/kg/hr. Explain why BMR was measured in Activity 1

2) What are the effects of injecting thyroxine on the metabolic rate of normal rat, thyroidectomized rat, and hypophysectomized rat? Explain why

3)Explain why injecting TSH has no effect on the metabolic rate of thyroidectomized rat

4)What are the effects of injecting propylthiouracil on the metabolic rate of normal rat, thyroidectomized rat, and hypophysectomized rat? Explain why.
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#1
Valued Member
12 years ago
4. The effect of PTU injections on the normal rat was to decrease the BMR. The palpable goiter was due to the buildup of the precursors to thyroxine.

3. The hypophysectomized rat BMR increased with TSH. The BMR was just below the normal rat but still lower. the syringe amount was a little too low.
Jazmine_Ilene Author
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#2
12 years ago
thank you so much Slight Smile
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#3
Valued Member
12 years ago
You're welcome Slight Smile
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