What is a goiter? Explain how goiters can develop in both hyposecretion and hypersecretion disorders
In these hyposecretion and hypersecretion disorders, would you expect the levels of other regulatory hormones involved in control of thyroid hormone secretion to be high or low? Why?
What will be an ideal response
A goiter is an enlarged thyroid gland. Hyposecretion goiters are usually due to insufficient iodide in the diet. Resulting low levels of thyroid hormones cause increased TRH and TSH until adequate thyroid activity is restored. Graves' disease causes hyperthyroidism by producing an antibody that mimics TSH. Thyroid enlargement occurs, and production of thyroid hormones increases. TRH and natural TSH remain low due to negative feedback, but TSH-mimicking antibody stimulates increased thyroid hormone production and secretion.
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The liver is part of the urinary system.
Answer the following statement true (T) or false (F)
Cardiovascular centers located in the ________ adjust the heart rate, the strength of cardiac contractions, and the flow of blood through the peripheral tissues
A) pons B) medulla oblongata C) prefrontal cortex D) thalamus E) midbrain
Absence of angiotensin converting enzyme will lead to
a) decreased blood pressure b) increased blood pressure c) will not have any effect on blood pressure d) All of these choices are correct. e) None of these choices is correct.
Without making or breaking bonds, the pictured molecule can change its shape because
What will be an ideal response?