Which of the following ions is conserved by aldosterone by preventing its loss from kidney tubules?
Correct answer: A. Na+
- A. Na+
- B. Ca++
- C. Mg++
- D. K+
Explanation
Aldosterone primarily acts to conserve sodium ions (Na+) in the kidney tubules by promoting their reabsorption from the urine back into the bloodstream. This helps maintain electrolyte balance and blood pressure.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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