MasteringBiology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
11th Edition
ISBN: 9780134472942
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 45, Problem 6TYU
Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?
(A) greater production of T3 than of T4
(B) hyposecretion of TSH
(C) hypersecretion of MSH
(D) a decrease in the thyroid secretion of calcitonin
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Most laboratories are able to determine blood levels of TSH, T3,and T4. Given that ability, design a method of determining whetherhyperthyroidism in a patient results from a pituitary abnormality or from the production of a nonpituitary thyroid stimulatorysubstance.
Provide an example of a (primary) hypothyroidism disorder in an adult. Would you expect thyroid stimulating hormone (TSH) to be increased or decreased with this disorder? Justify your response. Briefly outline the clinical manifestations of hypothyroidism.
Which of the following is the most likely explanation forhypothyroidism in a patient whose iodine level is normal?(A) greater production of T3 than of T4(B) hyposecretion of TSH(C) hypersecretion of MSH(D) a decrease in the thyroid secretion of calcitonin
Chapter 45 Solutions
MasteringBiology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - What type of gland would you expect to secrete...Ch. 45.1 - WHAT IF? Predict what would happen if you...Ch. 45.2 - What are the roles of oxytocin and prolactin in...Ch. 45.2 - How do the two fused glands of the pituitary gland...Ch. 45.2 - WHAT IF? 2192 Propose an explanation for why...Ch. 45.2 - what if? Lab tests of two patients, each...Ch. 45.3 - If a hormone pathway produces a transient response...Ch. 45.3 - Prob. 2CCCh. 45.3 - Prob. 3CC
Ch. 45 - MAKE CONNECTIONS What forms of signaling activate...Ch. 45 - Which major endocrine organs described in Figure...Ch. 45 - Prob. 45.3CRCh. 45 - Which of the following is not an accurate...Ch. 45 - Prob. 2TYUCh. 45 - Growth factors are local regulators that (A) are...Ch. 45 - Prob. 4TYUCh. 45 - Prob. 5TYUCh. 45 - Which of the following is the most likely...Ch. 45 - The relationship between the insect hormones...Ch. 45 - DRAW IT In mammals, milk production by mammary...Ch. 45 - Prob. 9TYUCh. 45 - Prob. 10TYUCh. 45 - Level 3: Synthesis/Evaluation 11. WRITE ABOUT A...Ch. 45 - Prob. 12TYU
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- Addisons disease develops when the adrenal cortex does not secrete enough mineralocorticoids and glucocorticoids. President John F. Kennedy was diagnosed with the disease when he was a young man. Before he started treatment with hormone replacement therapy, he was hypoglycemic and lost weight. Which missing hormone was responsible for his weight loss? How might Addisons disease have affected his blood pressure?arrow_forwardA physician sees a patient whose symptoms include sluggishness, depression, and intolerance to cold. After eliminating other possible causes, the doctor diagnoses a hormone problem. What disorder fits the symptoms? Why does the doctor suspect that the underlying cause is a malfunction of the anterior pituitary gland?arrow_forwardDiscuss the relationship between TSH levels and thyroid function?arrow_forward
- A person with symptoms of hypothyroidism (i.e., sluggishness and intolerance to cold) is found to have abnormally low plasma concentrations of T4, T3, and TSH. After an injection of TRH, the plasma concentrations of all three hormones increase. Where is the site of the defect leading to hypothyroidism?arrow_forwardWhat can the thyroid stimulating hormone (TSH) level tell us about hypothyroidism? Hyperthyroidism?arrow_forwardDescribe the steps leading to T3 and T4 production, beginning with the transport of iodide into the thyroid follicular epithelial cell.arrow_forward
- . Outline the mechanisms underlying thyroid hormone action on metabolism and body temperaturearrow_forwardThyroid hormones have all of the following qualities, except:A. They stimulate gluconeogenesisB. They acrivate central respiratory centerC. They inhibit pituitary TSH (thyroid stimulating hormone) synthesis D. They inhibit gluconeogenesisЕ. They increase basal metabolismarrow_forward
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