Cushing's syndrome is due to ________
A) hyposecretion of cortisol from the adrenal medulla
B) hypersecretion of cortisol from the adrenal medulla
C) hypersecretion of cortisol from the adrenal cortex
D) hyposecretion of cortisol from the adrenal cortex
C
Explanation: A) Cortisol is secreted from the adrenal cortex, not the adrenal medulla.
B) Cortisol is secreted from the adrenal cortex, not the adrenal medulla.
C) Correct! Cushing's syndrome is caused by an adenoma in the adrenal cortex that causes hypersecretion of cortisol.
D) Hyposecretion of cortisol results in Addison's disease, not Cushing's syndrome.
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