Nokea
Which of the following should the nurse advise a client with diabetes insipidus in order to reduce fluid loss?
- A. Remain in air-conditioned areas during hot and humid weather
- B. Avoid any activity
- C. Emphasize compliance with drug therapy
- D. Avoid a high-protein diet
Correct Answer: C
Rationale: Emphasizing compliance with drug therapy, such as desmopressin, is critical to reduce fluid loss in clients with diabetes insipidus.
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Which of the following hormones come from anterior lobe of the pituitary gland?
- A. Inhibin
- B. Adrenocorticotropic hormone
- C. Triiodothyronine
- D. Oxytocin
Correct Answer: b
Rationale: The correct answer is B: Adrenocorticotropic hormone (ACTH). ACTH is produced by the anterior lobe of the pituitary gland and stimulates the adrenal cortex to secrete cortisol. Inhibin is produced in the ovaries and testes, not the pituitary gland. Triiodothyronine is a thyroid hormone produced by the thyroid gland, not the pituitary gland. Oxytocin is produced by the posterior lobe of the pituitary gland, not the anterior lobe. Therefore, the correct answer is B because it is the hormone that originates from the anterior lobe of the pituitary gland.
Being lipid soluble, steroids can do all the following EXCEPT:
- A. catalyze cyclic AMP
- B. diffuse through the plasma membranes of target cells
- C. enter the nucleus
- D. activate genes to transcribe mRNA for protein synthesis
Correct Answer: A
Rationale: Step 1: Steroids are lipid-soluble molecules, allowing them to easily diffuse through the plasma membrane of target cells.
Step 2: Once inside the cell, steroids can enter the nucleus to bind to specific receptors and regulate gene expression.
Step 3: Steroids do not catalyze cyclic AMP; this function is typically associated with non-steroid hormones like adrenaline.
Step 4: Therefore, the correct answer is A because steroids do not catalyze cyclic AMP, unlike other hormones.
Oxytocin:
- A. is a neurohypophyseal hormone that stimulates the uterine muscle to contract, thereby assisting in labor.
- B. is a gonadotropin.
- C. stimulates the kidney to reabsorb Na+ and water, thereby expanding blood volume.
- D. is a mineralocorticoid.
Correct Answer: A
Rationale: Rationale:
1. Oxytocin is a neurohypophyseal hormone secreted by the posterior pituitary gland.
2. It plays a key role in stimulating uterine contractions during labor and childbirth.
3. This action helps in the progression of labor by promoting the expulsion of the fetus.
4. Oxytocin also stimulates milk ejection during breastfeeding.
5. Choice A is correct as it accurately describes the role of oxytocin in uterine muscle contraction.
Summary:
B: Oxytocin is not a gonadotropin; it does not directly affect gonadal function.
C: Oxytocin does not stimulate the kidney to reabsorb Na+ and water; that is the role of other hormones like aldosterone.
D: Oxytocin is not a mineralocorticoid; it does not regulate electrolyte balance like mineralocorticoids do.
Which system works closely with the endocrine system to coordinate the body's functions?
- A. nervous system
- B. immune system
- C. circulatory system
- D. respiratory system
Correct Answer: A
Rationale: The correct answer is A: nervous system. The nervous system works closely with the endocrine system to coordinate the body's functions through the release of neurotransmitters and hormones. The nervous system uses electrical signals to transmit information rapidly, while the endocrine system releases hormones into the bloodstream to regulate various bodily functions. The immune system (B) protects the body from infections, the circulatory system (C) transports nutrients and oxygen throughout the body, and the respiratory system (D) is responsible for gas exchange. However, these systems do not directly coordinate with the endocrine system in the same way the nervous system does.
Atropine has the following side effects EXCEPT:
- A. Dry mouth
- B. Tachycardia
- C. Blurred vision
- D. Diarrhea
Correct Answer: D
Rationale: The correct answer is D: Diarrhea. Atropine is an anticholinergic drug that typically causes dry mouth, tachycardia, and blurred vision as side effects due to its mechanism of blocking acetylcholine receptors. However, diarrhea is not a common side effect of atropine. It is important to differentiate the expected side effects of a drug from those that are not commonly associated with it based on its pharmacological actions.