Which one of the following accounts for the higher rate of reabsorption of \[N{{a}^{+}}\] in z?
A) The hormone present was purer in the extract.
B) The extract may have contained impurities.
C) The amount of hormone injected was greater than the amount of hormone in y.
D) The \[N{{a}^{+}}\] content of the body fluids was low in the experimental animals.
Correct Answer: C
Solution :
[c] Distinct parts of the adrenal glands, the cortex and the medulla, each produce different hormones, the cortical region produces coffins, e.g. corticosterone, which are essential to normal metabolism by controlling ionic distribution of \[N{{a}^{+}}\]and \[{{K}^{+}}\] in particular. A higher amount of the hormone injected in Z accounts for the higher rate of reabsorption of \[N{{a}^{+}}.\]
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