Explain how blood levels of T3/T4, TSH, and TRH would change in a laboratory animal that has undergone a thyroidectomy (complete removal of its thyroid gland).

describe the transport and kinetics of thyroid hormones in the blood

A 45-year-old woman comes to her physician complaining of nervousness and an unexplained weight loss of 25 pounds over the last 3 months, despite that she is not dieting or exrcising. On her physical examination, the doctor notices protruding eyes, her skin is moist and warm and her fingers have a tremor. Compared to a normal individual, the biopsy of her thyroid gland would most likely reveal which of the following? O a. A decrease in the size of the follicular cells O b. Decreased evidence of lysosomal activity O c. Decreased number of reabsorption lacunae O d. A decrease in the cross-sectional area occupied by the colloid O e. Decreased evidence of endocytosis

The posterior pituitary gland stores and releases the hormones oxytocin and ADH. The secretion of each hormone is regulated differently.Explain the difference between positive and negative feedback using the feedback pathways for oxytocin and ADH as examples.

Graves Disease is an autoimmune disorder that causes the thyroid gland to produce too much thyroxine.  This is caused by proteins that mimic TSH.  The growth of thyroid tissue is overstimulated which causes the thyroid to become enlarged.  This is otherwise known as a goitre.    Explain why the removal of a part of the thyroid gland would be a potential treatment for Grave’s disease?

Describe the close relationship between the human nervous and endocrine systems. Explain in detail the two main ways the hypothalamus controls the pituitary gland. Then explain how the pituitary gland exerts control over many other endocrine glands.