Nokea
What is the most likely effect of a deficiency of aldosterone?
- A. High blood pressure
- B. Low level of potassium in the blood
- C. Low blood volume and hypotension
- D. Goiter formation
Correct Answer: C
Rationale: Rationale:
1. Aldosterone regulates sodium and water balance in the body.
2. Deficiency leads to decreased sodium reabsorption, causing low blood volume.
3. Low blood volume results in hypotension due to reduced blood flow to tissues.
4. Choices A and B are incorrect as aldosterone deficiency does not cause high blood pressure or low potassium levels.
5. Choice D is incorrect as goiter formation is mainly related to thyroid hormone imbalance, not aldosterone deficiency.
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The endocrine gland(s) referred to as the 'master gland' is the:
- A. pancreas
- B. adrenal glands
- C. thyroid gland
- D. pituitary gland
Correct Answer: D
Rationale: The correct answer is D: pituitary gland. The pituitary gland is often referred to as the 'master gland' because it controls the functions of other endocrine glands in the body. It secretes hormones that regulate various bodily functions such as growth, metabolism, and reproduction. It is located at the base of the brain and is divided into two parts: anterior and posterior. The anterior pituitary gland produces and releases several important hormones that influence other endocrine glands. The other choices (A: pancreas, B: adrenal glands, C: thyroid gland) do not have the same broad regulatory control over the endocrine system as the pituitary gland.
Steatorrhoea occurs with all of the following EXCEPT:
- A. gastrinoma
- B. congenital defect in gastric lipase
- C. ileal disease with failure to reabsorb bile salts
- D. exocrine pancreatic disease
Correct Answer: B
Rationale: The correct answer is B: congenital defect in gastric lipase. Steatorrhoea is the presence of excess fat in the stool due to malabsorption. Gastrinoma (A), ileal disease (C), and exocrine pancreatic disease (D) can all lead to malabsorption of fats resulting in steatorrhoea. However, a congenital defect in gastric lipase does not directly affect fat absorption in the intestines, making it the exception in this scenario.
Pro-opiomelanocortin (POMC) is a prohormone for __________.
- A. ACTH
- B. growth hormone
- C. thyroxin
- D. insulin
Correct Answer: A
Rationale: Rationale: POMC is processed into various peptide hormones, including adrenocorticotropic hormone (ACTH). ACTH is produced by the pituitary gland and stimulates the adrenal glands to release cortisol. This is why option A is correct. Growth hormone, thyroxin, and insulin are not derived from POMC, making options B, C, and D incorrect.
The patient with newly diagnosed diabetes is displaying shakiness, confusion, irritability, and slurred speech. What should the nurse suspect is happening?
- A. DKA
- B. Hypoglycemia
- C. HHS
- D. Hyperglycemia
Correct Answer: B
Rationale: Shakiness, confusion, irritability, and slurred speech are common symptoms of hypoglycemia, which should be addressed promptly.
All of the following are β-adrenergic agonists EXCEPT:
- A. Adrenaline
- B. Dopamine
- C. Noradrenaline
- D. Phenylephrine
Correct Answer: D
Rationale: The correct answer is D: Phenylephrine. Beta-adrenergic agonists stimulate beta-adrenergic receptors. Phenylephrine is an alpha-adrenergic agonist, not a beta-adrenergic agonist. Adrenaline, dopamine, and noradrenaline are all beta-adrenergic agonists. Therefore, the correct answer is D.