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Question #46377
The Question
A patient exhibits chronic hyperactivation of the Renin-Angiotensin-Aldosterone System (RAAS). Which of the following statements regarding the physiological consequences and counter-regulatory mechanisms is INCORRECT?
Options
- A.
Angiotensin II acts as a potent vasoconstrictor, increasing systemic blood pressure and potentially inducing myocardial hypertrophy due to elevated afterload.
- B.
The atrial wall of the heart secretes Atrial Natriuretic Factor (ANF), which acts as a check on the RAAS pathway by causing vasodilation.
- C.
Aldosterone stimulates the obligatory reabsorption of Na+ and water in the proximal convoluted tubule to further expand blood volume.
- D.
Angiotensin II activates the adrenal cortex to release a steroid hormone that decreases the excretion of Na+ in the urine.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
ANF|Renin|Angiotensin II|Coronary vasculature
Why This Question Is Tricky
Common Mistakes
Location and Terminology Trap: The conceptual pivot relies on distinguishing between 'Obligatory' reabsorption (which occurs in the PCT and is not regulated by aldosterone) and 'Conditional' reabsorption (which occurs in the DCT under the influence of aldosterone).
Students often memorize the general function of aldosterone but overlook its specific anatomical target and functional classification.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Body Fluids and Circulation - Class 11 |
| Concept | Coronary Circulation Specifics |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |