Which of these statements about the adrenal cortex is true ?

Options

A. It secretes some androgens
B. The zonaglomerulosa secretes aldosterone
C. The zonafasciculata is stimulated by ACTH
D. All of the above

Answer

To determine which statements about the adrenal cortex are true, we need to analyze the structure and function of the adrenal cortex. The adrenal cortex is divided into three distinct zones, each responsible for producing different hormones.

### Step-by-Step Solution:

1. **Identify the Structure of the Adrenal Cortex**:
- The adrenal cortex is the outer part of the adrenal gland, which is divided into three zones: zona glomerulosa, zona fasciculata, and zona reticularis.

2. **Examine the Zona Glomerulosa**:
- The outermost layer, the zona glomerulosa, primarily secretes aldosterone, which is a mineralocorticoid hormone that helps regulate blood pressure and electrolyte balance.

3. **Examine the Zona Fasciculata**:
- The middle layer, the zona fasciculata, secretes glucocorticoids, such as corticosterone. This zone is stimulated by adrenocorticotropic hormone (ACTH) from the pituitary gland.

4. **Examine the Zona Reticularis**:
- The innermost layer, the zona reticularis, secretes androgens, which are male sex hormones that contribute to the development of secondary sexual characteristics.

5. **Evaluate the Statements**:
- If the statements mention the secretion of aldosterone by the zona glomerulosa, corticosterone by the zona fasciculata, and androgens by the zona reticularis, then all statements are true.

6. **Conclusion**:
- Since all the statements regarding the functions of the adrenal cortex are accurate, the correct answer is that all of the above statements are true.

### Final Answer:
- All of the above statements about the adrenal cortex are true.