Which hormones of the adrenal glands supplement the sex hormones from the gonads?
- A. Mineralocorticoids, such as aldosterone
- B. Glucocorticoids, such as cortisol
- C. Gnadocorticoids, such as the androgens
- D. Epinephrine and norepinephrine.
Correct Answer: C
Rationale: The correct answer is C, Gnadocorticoids, such as the androgens. The adrenal glands produce androgens like DHEA which can supplement sex hormones from the gonads. Choice A, mineralocorticoids, control electrolyte and water balance. Choice B, glucocorticoids, regulate metabolism and immune response. Choice D, epinephrine and norepinephrine, are involved in the fight or flight response. Gnadcorticoids, specifically androgens, are the hormones from the adrenal glands that can supplement sex hormones from the gonads, making choice C the correct answer.
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The only hormone that lowers blood glucose levels is:
- A. glucagon.
- B. insulin.
- C. epinephrine.
- D. cortisol.
Correct Answer: B
Rationale: The correct answer is B: insulin. Insulin is produced by the pancreas and helps lower blood glucose levels by promoting the uptake of glucose into cells for energy or storage. Glucagon (A) raises blood glucose levels, epinephrine (C) and cortisol (D) also increase blood glucose levels by stimulating the release of glucose from storage sites.
Which class of oral glucose-lowering agents is most commonly used for people with type 2 diabetes because it reduces hepatic glucose production and enhances tissue uptake of glucose?
- A. Insulin
- B. Meglitinide
- C. Biguanide
- D. Sulfonylurea
Correct Answer: B
Rationale: Biguanides, like metformin, are commonly used because they reduce glucose production in the liver and enhance tissue glucose uptake.
To assure accuracy of a urine test for glucose and acetone, the nurse instructs the patient to
- A. perform the urine test one-half hour after meals and at bedtime
- B. drink three glasses of water before the test
- C. void one-half hour before the test, then at the time of the test
- D. increase carbohydrate intake if the results are negative
Correct Answer: C
Rationale: To ensure accurate results, the patient should void before the test and then test the urine at the specified time.
Normal development of the immune response is due in part to hormones produced by the ________.
- A. adrenal medulla
- B. pancreas
- C. thyroid gland
- D. thymus gland
Correct Answer: D
Rationale: The correct answer is D: thymus gland. The thymus gland is crucial for the development and maturation of T cells, a type of immune cell. The hormones produced by the thymus gland, such as thymosin, play a key role in the proper functioning of the immune system. Without a functional thymus gland, the immune response would be compromised.
Explanation for why other choices are incorrect:
A: Adrenal medulla does not play a direct role in immune response development.
B: Pancreas primarily produces hormones related to blood sugar regulation, not immune response.
C: Thyroid gland produces hormones that regulate metabolism, not directly related to immune response development.
A congenital condition that includes mental retardation, short disproportional body size, and a thick tongue and neck is caused by __________.
- A. insulin deficiency
- B. deficiency of thymosin
- C. deficiency of thyroxin
- D. excess of synthetic growth hormone
Correct Answer: C
Rationale: Step 1: The congenital condition described points towards a disorder affecting growth and development.
Step 2: The symptoms of mental retardation, short body size, and thick neck suggest hypothyroidism.
Step 3: Thyroxin is a hormone produced by the thyroid gland that regulates metabolism and growth.
Step 4: A deficiency of thyroxin in congenital hypothyroidism leads to the described symptoms.
Step 5: Therefore, the correct answer is C: deficiency of thyroxin.
Summary:
A: Insulin deficiency does not match the symptoms described.
B: Thymosin deficiency is not related to growth and mental retardation.
D: Excess of synthetic growth hormone would not cause mental retardation and thick neck.