What is so special about cholecystokinin (CCK)? Identify the components of the hormone system which fulfill the four roles of the standard homeostatic system.
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What is so special about cholecystokinin (CCK)? Identify the components of the hormone system which fulfill the four roles of the standard homeostatic system.
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Solved in 2 steps
- Name one hormone produced by each of the following organs—the heart, liver, and placenta—and state the function of each hormone?.A) It is often said that growth hormone (GH) has both direct and indirect effects. Describe carefully what is meant by this. b) Also give examples of how a disorder in the system in which GH is involved can cause symptoms. Explain the mechanism behind.Which one of the following statements about T3 is FALSE? 1) It is thought to be the most active thyroid hormone. 2) It may be elevated to a greater extent than T4 in hyperthyroidism. 3) It is not bound to serum proteins. 4) It is commonly decreased in patients with nonthyroidal illness. no references, just homework.
- 1) Hormone pathologies often manifest with elevated or lower hormones. The underlying cause may differ. What symptoms would be associated with hyperthyroidism? 2) Autoimmune disease in which auto-antibodies stimulate the TSH receptor (TSHR) on the thyroid gland. How would this affect levels of TRH, TSH, and TH? Draw out the H-P-T axis to illustrate changes in each hormone. 3) What symptoms would be associated with hypothyroidism? 4) How could this disease be treated? When the thyroid cells are destroyed, they cannot make hormones anymore and TH replacement needs to be given.Identify and provide an example of each of the threegeneral classes of hormone.I. A student, half an hour after the dinner, containing about 150 g of carbohydrates, 20 g of fat, and 40 g of protein, is sitting in a chair and reading. a) name the hormone level in blood that is elevated during resting; describe the steps of its synthesis, name the secretion stimuli and target tissues; b) present a diagram of the hormonal signal transduction to target cells; c) draw diagrams reflecting the student's metabolic changes of glucose and fats in adipocytes; d) enumerate the regulatory enzymes of fatty acid synthesis from glucose that have their activity and amount increased under the influence of the mentioned hormone.
- Congenital adrenal hyperplasia is a lifethreatening condition that results from a deficiency in the P450 enzyme steroid 21- hydroxylase. This enzyme catalyzes the first step in the conversion of progesterone into cortisol and aldosterone (Figures 26.28 and 26.29). A characteristic of congenital adrenal hyperplasia is an increase in sex hormone production. Explain why this is the case.Identify the three chemical classes of hormones, and give an example of each. Most hormones belong to which class?Describe the principal functions of the two major groups of adreno-cortical steroids, the glucocorticoids, and the mineralocorticoids. To what extent do these names provide clues to their function?