Endocrine System

NAME ___________________________________

LAB TIME/DATE _______________________

REVIEW SHEET

exercise

Endocrine System Physiology

1. Match each of the hormones in the left hand column with its source. thyroxine estrogen thyroid stimulating hormone (TSH) insulin 2. a. b. c. d. ovary thyroid gland pancreas pituitary gland

4

Each hormone is known to have a specific target tissue. For each of the following hormones, list its target tissue and describe its specific action. thyroxine estrogen

thyroid stimulating hormone (TSH)

insulin

follicle stimulating hormone (FSH)

3.

What is the role of the hypothalamus in the production of thyroxine and TSH?

4.

How does thyrotropin releasing hormone (TRH) travel from the hypothalamus to the pituitary gland?

Review Sheet 4

123

5. What are tropic hormones?

6. In the metabolism experiment, what was the effect of thyroxine on the overall metabolic rate of the animals?

7. Using the respirometer-manometer, you observed the amount of oxygen being used by animals in a closed chamber. What happened to the carbon dioxide the animals produced while in the chamber?

8. (a) If the experimental animals in the chamber were engaged in physical activity (such as running in a wheel), how would this change the results of the metabolism experiment?

(b) What changes would you expect to see in fluid levels of the manometer?

9. Why didn’t the administration of thyroid stimulating hormone (TSH) have any effect on the metabolic rate of the thyroidectomized rat?

10. Why didn’t the administration of propylthiouracil have any effect on the metabolic rate of either the thyroidectomized rat or the hypophysectomized rat?

11. In the hormone replacement therapy experiment, what was the effect of removing the ovaries from the animals?

124

Review Sheet 4

12. Specifically, what hormone did the ovariectomies effectively remove from the animals, and what purpose does this hormone serve?...