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Endocrine System Quiz Quiz # 2 Fall 2008

Endocrine System Quiz Quiz # 2 Fall 2008. Circle the letter of each correct response. Question # 1. T4 is a _________ hormone. A) peptide B) steroid C) amine. Question # 2. Peptide hormones typically have their receptors located A) in the cell membrane of target cells

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Endocrine System Quiz Quiz # 2 Fall 2008

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  1. Endocrine System QuizQuiz # 2 Fall 2008 • Circle the letter of each correct response

  2. Question # 1 • T4 is a _________ hormone. • A) peptide • B) steroid • C) amine.

  3. Question # 2 • Peptide hormones typically have their receptors located • A) in the cell membrane of target cells • B) inside target cells

  4. Question # 3 • Cortisol is • A) a mineralicorticoid • B) a peptide hormone • C) secreted by the adrenal medulla • D) present in sub-normal levels in the plasma of a person with Addison’s disease • E) eliminated slowly from the plasma because most is transported bound to plasma proteins

  5. Question # 4 • Addison’s disease is an example of • A) primary hypersecretion • B) secondary hypersecretion • C) primary hyposecretion

  6. Question # 5 • In a patient in untreated primary hypothyroidism, plasma levels of TSH are expected to be • A) greater than normal • B) within the normal range • C) less than normal.

  7. Question # 6 • Which of the following hormones reaches their target cells via the hypothalamo-hypophyseal portal system? • A) vasopressin • B) TSH • C) T4 • D) dopamine • E) prolactin • F) corticotropin releasing hormone

  8. Question # 7 • The most effective treatment for primary adrenocortical insufficiency is hormone replacement therapy with • A) cortisol • B) aldosterone • C) ACTH • D) EPI

  9. Question # 8 • The secretion of FSH should be ______ via long loop negative feedback in a man with testicular cancer whose plasma testosterone levels are greatly elevated. • A) increased • B) decreased • C) unchanged.

  10. Question # 9 • For a patient who presents with disturbances of plasma levels of sodium and potassium, which of the following hormones is most likely involved: • A) insulin • B) aldosterone • C) PTH

  11. Question # 10 • A hormone that stimulates the secretion of another hormone is called a TROPIC hormone. • (Write the one-word anwer in the space provided on the answer sheet.)

  12. Question # 11 • As concisely as possibly, explain why a person with primary hypothyroidism (Hazel C. from the case studies lab) has low blood pressure and bradycardia. • Hazel’s cells are less sensitive to EPI than they normally would be because she is deficient in thyroid hormones. Normal levels of thyroid hormone stimulate the expression of adrenergic receptors which allows cells in the heart to response more vigorously to EPI by increasing heart rate and smooth muscles of blood vessels to contract and elevate blood pressure in the presence of EPI.

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