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A patient with Cushingâ s syndrome due to an adrenal tumor would have high plasma levels of CRH.
True
False
2.
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The normal response to a low dose (1 mg) dexamethasone suppression test is a reduction in plasma cortisol to less than ~5 microgram/dL.
True
False
3.
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ACTH stimulates the conversion of cholesterol to pregnenolone in cells of the adrenal cortex.
True
False
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Step by step
Solved in 2 steps
- Which hormones produced in the posterior and anterior lobes of the pituitary gland have the targets indicated? Below, fill in the blanks using the abbreviations noted in Section 15.3.Match the endocrine control concepts.During a low dose (1 mg) dexamethasone suppression test, total cortisol levels measured in a patient in a patient at 8:35 am was 2.8ug/dL How is that interpreted? Answers to choose from: The patient is normal, or The patient has Cushing's syndrome, or The patient has a nonpituitary tumor causing ectopic ACTH syndrome., or The patient has an ACTH-screting pituitary adenoma. no references, just homework.
- Cushing’s syndrome is a disorder that occurs when your adrenal glands release too much cortisol.Sometimes, Cushing’s is caused by a hormone-secreting tumor that leads to dysregulation of the hypothalamus-pituitary-adrenal gland axis. Below, are listed a few tests doctors perform to determine the specific cause of Cushing’s in each patient. Please read the description of the test and possible results and respond to the prompts below. 1 Measure blood levels of adrenocorticotropic hormone (ACTH). If ACTH levels are lower than normal, where is the tumor? How do you know? Remember, this person has high cortisol levels 2 Conduct a corticotropin-releasing hormone (CRH) stimulation test where you inject a shot of CRH. If this test results in a normal increase in ACTH levels, where is the tumor? How do you know? 3 Inject a very high-dose of compound that is a cortisol-receptor agonist. A few hours later measure levels of circulating ACTH. If the test results in normal…A 19-year-old with glucocorticoid resistance due to mutations in the glucocorticoid receptor in the ligand binding domain that markedly decreases the affinity of the receptor for cortisol. Which of the following findings is most likely? Decreased serum ACTH concentration Decreased serum sodium concentration Increased sensitivity to dexamethasone Increased serum cortisol concentration Increased serum glucose concentration(PLEASE ANSWER ALL OF THE QUESTIONS) 10. If you were trying to stay awake at night and sleep during the day, you would need to decrease the production of _ (blank) _ at night. Select one: a. Melatonin b. Renin c. Oxytocin d. Glucagon e. Aldosterone 11. Which of the following endocrine structures is found in the neck? Select one: a. The pineal gland b. The thymus gland c. The hypothalamus d. The thyroid gland e. The adrenal gland 12. Which of the following endocrine structures would be found directly below the sternum in the thoracic cavity? Select one: a. The thyroid gland b. The thymus gland c. The parathyroid gland d. The adrenal gland e. The pituitary gland
- A type of diabetes mellitus is due to defects in insulin signaling. True FalseWhich of the following statements about epinephrine and cortisol is CORRECT? Select one: a. They trigger an inflammatory response. b. They are water soluble hormones. c. They promote adrenocorticotropin (ACTH) secretion. d. The plasma half-life of epinephrine is longer than cortisol. e. They increase blood glucose levels.List the statements that describe the endocrine system. Travels by blood Fast-acting Long-lasting effects Slow acting Short term effects Record your answers in ascending (lowest to highest) order.
- The subject who was diagnosed with hyperthyroidism was given propylthiouracil (prevents T4 production and conversion of T4 to T3 in the tissues). After 2 months of treatment, her TSH levels increased by 371.15 % and her T4 levels decreased by 42.7 %. Explain why her TSH levels increased and her T4 levels decreased.Indicate whether the following statements about the pituitary glands are TRUE or FALSE. If the statement is false, correct the statement to make it true 1. The anterior and posterior pituitary glands are responsible for producing and releasing hormones. 2. The posterior pituitary gland is regulated by the hypothalamus via a positive feedback loop. 3. The hypothalamus regulates the release of cortisol via the sympathetic nervous system and that of epinephrine via the parasympathetic nervous system. 4. The releasing hormones from the hypothalamus stimulate the production of stimulating hormones and human growth hormone.Which of these endocrine cells are also target cells for other hormones? (choose the most inclusive answer) adrenal cortex endocrine cells adrenal cortex endocrine cells and thyroid endocrine cells adrenal cortex endocrine cells, thyroid endocrine cells, and anterior pituitary endocrine cells none of the above endocrine cells are target cells for other hormones
