Systemic hypertension may be caused by A. Hypoxia due to chronic resp

1.	Systemic hypertension may be caused by A. Hypoxia due to chronic respiratory failure. B. Excessive secretion of aldosterone. C. Excessive secretion of adrenocorticotrophic hormone (ACTH). D. Myocardial thickening (hypertrophy) of the left ventricle. E. The rapid cardiac action of ventricular fibrillation.
Answer» A. False This constricts blood vessels in the lungs causing pulmonary hypertension but dilates systemic vessels. B. True Salt and water retention by the kidneys expands ECF and hence blood volume and cardiac output. C. True The resulting secretion of cortisol also causes salt and water retention. D. False This is a consequence of hypertension, not a cause. E. False This ineffective pumping in ventricular fibrillation causes severe hypotension.

Systemic hypertension may be caused by A. Hypoxia due to chronic respiratory failure. B. Excessive secretion of aldosterone. C. Excessive secretion of adrenocorticotrophic hormone (ACTH). D. Myocardial thickening (hypertrophy) of the left ventricle. E. The rapid cardiac action of ventricular fibrillation.

Answer»

A. False This constricts blood vessels in the lungs causing pulmonary hypertension but dilates systemic vessels.

B. True Salt and water retention by the kidneys expands ECF and hence blood volume and cardiac output.

C. True The resulting secretion of cortisol also causes salt and water retention.

D. False This is a consequence of hypertension, not a cause.

E. False This ineffective pumping in ventricular fibrillation causes severe hypotension.

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