Saved Your patient is observed to have symptoms that are consistent with elevate

Question

Saved Your patient is observed to have symptoms that are consistent with elevated concentrations of epinephrine in the blood, including a rapid heart rate, anxiety, and elevated plasma free fatty acid concentrations. However, the circulating epinephrine concentrations are tested and found to be in the normal range. Click on the statement below that offers the best explanation for your patient's condition. Since estrogen is permissive of the actions of epinephrine, your patient may have a hypersecreting ovarian tumor. This leads to elevated circulating concentration of estrogen and a greater potentiation of the actions of epinephrine on the heart, nervous system, and adipose tissue Since growth hormone is permissive of the actions of epinephrine, your patient may have anterior pituitary disease. This leads to elevated circulating concentration of growth hormone and a greater potentiation of the actions of epinephrine on the heart, nervous system, and Since cortisol is permissive of the actions of epinephrine, your patient may havea tumor within the adrenal cortex. This leads to elevated circulating concentration of cortisol and a greater potentiation of the actions of epinephrine on the heart, nervous system, and adipose tissue Since thyroid hormone is permissive of the actions of epinephrine, your patient may have thyroid disease. This leads to elevated circulating concentration of thyroid hormone and a greater potentiation of the actions of epinephrine on the heart, nervous system, and adipose tissue

Explanation / Answer

The answer is the fourth one. permissiveness is a biochemical situation in which the presence of one hormone is required for another hormone to imply its full effects on a target cell.

Thyroid hormone increases the number of receptors for epinephrine at the epinephrine's target cell, thereby increasing epinephrine's effect on that cell.

in absence of thyroid hormone, epinephrine would have only a weak effect.

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