If a person has a pituitary tumor that is oversecreting TSH, would this person be likely to have goiter as a symptom? Explain.

Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?a. greater production of T3 than of T4b. hyposecretion of TSHc. hypersecretion of MSHd. a decrease in the thyroid secretion of calcitonin

In a glucose tolerance test, periodic measurements of blood glucose level are taken after a person drinks a glucose-rich solution. Using the hypothetical graph below, compare and contrast the results of the test for the diabetic and the healthy individual.

Why is the observation that one hormone may bind to more than one type of receptor important?

The relationship between the insect hormones ecdysteroid and PTTH is an example ofa. an interaction of the endocrine and nervous systems.b. homeostasis achieved by positive feedback.c. homeostasis maintained by antagonistic hormones.d. competitive inhibition of a hormone receptor.

Compare and contrast the structure and function of the anterior and posterior pituitary glands.

DRAW IT In mammals, milk production by mammary glands is controlled by prolactin and prolactin-releasing hormone. Draw a simple sketch of this pathway, including glands, tissues, hormones, routes for hormone movement, and effects.

Which two of the hormones listed below act upon the body with similar functions? Explain. a. glucagon b. oxytocin c. glucocorticoids d. ADH

Design a study to test the hypothesis that the symptoms of jet lag are caused by disruption of normal daily cortisol rhythms.