Nokea
Which of the following is not a function of insulin?
- A. Lowering blood glucose levels
- B. Promoting protein synthesis
- C. Simulating hepatic gluconeogenesis
- D. Promoting fatty acid synthesis
Correct Answer: C
Rationale: The correct answer is C: Stimulating hepatic gluconeogenesis. Insulin's primary function is to lower blood glucose levels by promoting glucose uptake in cells and inhibiting gluconeogenesis in the liver. Choice A is correct as insulin helps lower blood glucose levels. Choice B is correct as insulin promotes protein synthesis. Choice D is correct as insulin promotes fatty acid synthesis to store excess glucose as fat. Therefore, choice C is incorrect as insulin actually inhibits hepatic gluconeogenesis rather than stimulating it.
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When blood calcium levels are high, ____ is released from the thyroid gland to deposit the excess calcium into the bones.
- A. parathyroid hormone
- B. calcitonin
- C. oxytocin
- D. glucagon
Correct Answer: B
Rationale: Calcitonin is the correct answer because it is released from the thyroid gland in response to high blood calcium levels to deposit the excess calcium into the bones, decreasing blood calcium levels. Parathyroid hormone (A) works in the opposite way, increasing blood calcium levels by releasing calcium from bones. Oxytocin (C) is a hormone involved in labor and breastfeeding, not calcium regulation. Glucagon (D) is released from the pancreas to increase blood glucose levels, not calcium levels. Therefore, calcitonin is the most suitable choice for regulating high blood calcium levels by promoting calcium deposition in the bones.
The inability to produce ADH causes ______.
- A. diabetes mellitus.
- B. uterine contractions.
- C. diabetes insipidus.
- D. decreased urine volume.
Correct Answer: C
Rationale: The correct answer is C: diabetes insipidus. The inability to produce ADH (antidiuretic hormone) results in diabetes insipidus, characterized by excessive thirst and urination. ADH plays a crucial role in regulating water retention by the kidneys. Without ADH, the kidneys are unable to concentrate urine, leading to increased urine output and dehydration.
A: Diabetes mellitus is not caused by the inability to produce ADH. It is a condition characterized by high blood sugar levels due to insufficient insulin production or ineffective use of insulin.
B: Uterine contractions are not related to the production of ADH. Uterine contractions are primarily controlled by hormones such as oxytocin during labor.
D: Decreased urine volume is the opposite of what occurs in diabetes insipidus. In this condition, there is an increase in urine volume due to the inability to concentrate urine.
Which of the following produced only by large amounts of glucocorticoids?
- A. Normal responsiveness of fat depots to norepinephrine
- B. Maintenance of normal vascular reactivity
- C. Increased excretion of a water load
- D. Inhibition of the inflammatory response
Correct Answer: D
Rationale: The correct answer is D because glucocorticoids inhibit the inflammatory response by suppressing the immune system. Glucocorticoids reduce inflammation by blocking the production of inflammatory substances like prostaglandins and cytokines. This effect is only observed in large amounts of glucocorticoids. Choices A, B, and C are not produced exclusively by large amounts of glucocorticoids. Normal responsiveness of fat depots to norepinephrine and maintenance of normal vascular reactivity are not directly related to glucocorticoids in large amounts. Increased excretion of a water load is more influenced by other factors such as hydration status and renal function.
A 66-year-old female with a long history of heavy smoking presents to her doctor with complaints of shortness of breath and chronic coughing that has been present for about 2 years and has been worsening in frequency. The doctor decides to prescribe a bronchodilator agent that has minimal cardiac side effects, since the patient also has an extensive cardiac history. Which medication did the doctor likely prescribe?
- A. Albuterol
- B. Prazosin
- C. Atenolol
- D. Ipratropium
Correct Answer: D
Rationale: The correct answer is D: Ipratropium. Ipratropium is an anticholinergic bronchodilator that has minimal cardiac side effects. It is commonly used to treat chronic obstructive pulmonary disease (COPD) and asthma. In this case, the patient's history of heavy smoking, shortness of breath, and chronic coughing suggests a respiratory condition like COPD. Albuterol (choice A) is a short-acting beta-agonist bronchodilator that can have cardiac side effects such as palpitations and increased heart rate. Prazosin (choice B) is an alpha-blocker used for hypertension and has no bronchodilator effects. Atenolol (choice C) is a beta-blocker used for hypertension and can worsen bronchospasm in patients with respiratory conditions. Therefore, the doctor likely prescribed Ipratropium to address the patient's respiratory symptoms while minimizing cardiac side effects.
The nurse assesses a client who is scheduled to have a laboratory test to determine if the client’s adrenal glands are hypoactive. What type of testing would the client likely have?
- A. Catecholamine testing
- B. Suppression testing
- C. Bone marrow testing
- D. Provocative testing
Correct Answer: D
Rationale: The correct answer is D: Provocative testing. This type of testing is used to stimulate the adrenal glands to produce hormones, helping to assess their function. Catecholamine testing is specific for hormones like adrenaline and noradrenaline. Suppression testing is used to assess overactivity of glands. Bone marrow testing is unrelated to adrenal gland function. In summary, provocative testing is the most appropriate choice to evaluate adrenal gland activity.