In adrenocortical insufficiencies, such as Addison’s disease, what causes the most severe manifestations?
An insufficient amount of triiodothyronine (T3) and thyroxine (T4)
Decreased levels of all the adrenocortical hormones
Deficiencies in the renin-angiotensin system
An insufficient amount of circulating cortisol
The Correct Answer is D
Choice A rationale
An insufficient amount of triiodothyronine (T3) and thyroxine (T4) would lead to hypothyroidism, not Addison’s disease.
Choice B rationale
Decreased levels of all the adrenocortical hormones could lead to various symptoms, but the most severe manifestations of Addison’s disease are specifically caused by an insufficient amount of circulating cortisol.
Choice C rationale
Deficiencies in the renin-angiotensin system could affect blood pressure regulation, but they would not cause the most severe manifestations of Addison’s disease.
Choice D rationale
An insufficient amount of circulating cortisol is indeed what causes the most severe manifestations of Addison’s disease. Cortisol is a hormone that helps your body respond to stress, including the stress of illness, injury or surgery. It also helps maintain your blood pressure, heart function, immune system and blood glucose (sugar) levels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Thyroid tumors can lead to hyperthyroidism or hypothyroidism, not hyperparathyroidism.
Choice B rationale
Pancreatic tumors do not directly cause hyperparathyroidism. However, certain types of pancreatic tumors can lead to multiple endocrine neoplasia type 1 (MEN1), a disorder that can include hyperparathyroidism.
Choice C rationale
Hypertension is a condition that can be associated with various endocrine disorders, but it does not cause hyperparathyroidism.
Choice D rationale
Lung infections do not cause hyperparathyroidism. However, certain lung diseases can lead to endocrine disorders.
Correct Answer is A
Explanation
Choice A rationale
Painless hematuria, or blood in the urine, is often the first symptom of bladder cancer.
Choice B rationale
Dysuria, or painful urination, can be a symptom of bladder cancer, but it is not usually the first symptom.
Choice C rationale
Sudden incontinence can be a symptom of bladder cancer, but it is not usually the first symptom.
Choice D rationale
A bladder infection can be a symptom of bladder cancer, but it is not usually the first symptom.
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