NURS 611 EXAM 3 PATHO 2 TEST BANKS 2024 LATEST UPDATED ACTUAL EXAM 100% COMPETE QUESTIONS & CORRECTLY HIGHLIGHTED ANSWERS WTH RATIONALES A+ GRADE GUARANTEED PASS.

NURS 611 EXAM 3 PATHO 2 TEST BANKS 2024 LATEST UPDATED ACTUAL EXAM 100% COMPETE QUESTIONS & CORRECTLY HIGHLIGHTED ANSWERS WTH RATIONALES A+ GRADE GUARANTEED PASS. Thyroid-stimulating hormone (TSH) is released to stimulate thyroid hormone (TH) and is inhibited when plasma levels of TH are adequate. This is an example of: a.Positive feedback c.Neural regulation b.Negative feedback d.Physiologic regulation - ANSWER- B Feedback systems provide precise monitoring and control of the cellular environment. Negative feedback occurs because the changing chemical, neural, or endocrine response to a stimulus negates the initiating change that triggered the release of the hormone. Thyrotropin-releasing hormone (TRH) from the hypothalamus stimulates TSH secretion from the anterior pituitary. Secretion of TSH stimulates the synthesis and secretion of THs. Increasing levels of T4 and triiodothyronine (T3) then generate negative feedback on the pituitary and hypothalamus to inhibit TRH and TSH synthesis. The described example is not accurately identified by any of the other options. What imbalance lessens the rate of secretion of parathyroid hormone (PTH)? a.Increased serum calcium levels b.Decreased serum magnesium levels c.Decreased levels of thyroid-stimulating hormone d.Increased levels of thyroid-stimulating hormone - ANSWER- A. The overall effect of parathyroid hormone (PTH)is to increase serum calcium and to decrease serum phosphate concentration. The other presented imbalances will not affect PTH in the described fashion. Regulation of the release of catecholamines from the adrenal medulla is an example of which type of regulation? a.Negative feedback c.Neural b.Positive feedback d.Physiologic - ANSWER- c. How does a faulty negative-feedback mechanism result in a hormonal imbalance? a.Hormones are not synthesized in response to cellular and tissue activities. b.Decreased hormonal secretion is a response to rising hormone levels. c.Too little hormone production is initiated. d.Excessive hormone production results from a failure to turn off the system. - ANSWER- D. Negative-feedback systems are important in maintaining hormones within physiologic ranges. The lack of negative-feedback inhibition on hormonal release often results in pathologic conditions. Excessive hormone production, which is th e result of the failure to turn off the system, can cause various hormonal imbalances and related conditions. The correct option is the only accurate description of this hormonal function. Oxytocin is responsible for the contraction of the uterus and milk ejection in lactating women and may affect sperm motility in men. The remaining options are not capable of triggering uterine contractions. What effect does hyperphosphatemia have on other electrolytes? a. Increases serum calcium. c. Decreases serum magnesium. b. Decreases serum calcium. d. Increases serum magnesium. - ANSWER- B Hyperphosphatemia leads to hypocalcemia; the other options are incorrect. Which substance is a water-soluble protein hormone? a.Thyroxine c.Follicle-stimulating hormone b.Aldosterone d.Insulin - ANSWER- D. Peptide or protein hormones, such as insulin, pituitary, hypothalamic, and parathyroid, are water soluble and circulate in free (unbound) forms. All the remaining options are fat-soluble hormones.