Chapter 18 Endocrine System Exam

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Register to read the introduction… Which of the following would NOT be a possible outcome of elevated TSH secretion? A) increased TRH synthesis B) increased T3/T4 synthesis C) increased body temperature D) decreased blood cholesterol levels E) increased lipolysis ____ 66. Increased levels of thyroid hormones would A) decrease basal metabolic rate. B) up regulate beta receptors C) impair body growth. D) decrease the effects of norepinephrine on the heart and blood vessels. E) decrease protein synthesis. ____ 67. Calcitonin A) is synthesized by the parathyroid glands. B) acts primarily on osteoblasts. C) decreases blood Ca2+ levels. D) acts synergistically with calcitriol. E) acts permissively with PTH. ____ 68. The parathyroid glands A) are embedded within the thyroid gland. B) contain chief cells, which secrete PTH. C) are controlled by negative feedback mechanisms. D) A and B are correct. E) A, B and C are correct. ____ 69. How does PTH increase blood Ca2+ levels? A) by increasing osteoblasts activity B) by increasing renal excretion of Ca2+ C) by decreasing renal excretion of HPO42D) by decreasing renal production of calcitriol E) All of these are correct. ____ 70. The adrenal glands A) lie superior and medial to the kidneys. B) have an inner medulla derived from embryonic ectoderm. C) have an outer cortex that secretes hormones critical to maintenance of homeostasis. D) A and B are correct. E) A, B and C are …show more content…
Which of the following hormones is correctly matched to its source and function(s)? A) melatonin: pituitary gland; controls mood B) thymosin: thyroid gland; regulates metabolism C) gastrin: kidney; controls blood pressure D) ANP: heart; regulates blood Ca2+ E) EPO: kidney; stimulates formation of red blood cells ____ 78. Which of the following is NOT correct? A) A change in the environment that produces a stress response is a stressor. B) Eustress is productive stress that allows the body or mind to meet challenges. C) Distress is stress that disrupts homeostasis. D) The stress response is controlled primarily by the medulla oblongata. E) The stress response occurs in fight-or-flight, resistance and exhaustion stages. ____ 79. The fight-or-flight response A) is the body’s immediate response to a real or perceived threat to survival. B) elevates heart and respiration rates and blood glucose level. C) decreases urinary and digestive functions. D) activates the renin-angiotensin-aldosterone pathway. E) All of these are correct. ____ 80. The resistance stage of the stress response A) precedes the fight-or-flight response. B) is mediated primarily by CRH, GHRH, and TRH. C) is briefer than the fight-or-flight response. D) decreases blood glucose levels. E) increases the inflammation response. ____ 81. Which of the following disorders and hormonal imbalances is correctly matched? A) diabetes insipidus: decreased insulin response B) acromegaly: excessive hGH secretion after epiphyseal plates close C) diabetes mellitus: decreased ADH secretion D) pheochromocytoma: excessive thyroid hormone production E) cretinism: excessive cortisol

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