Find the correct statement

Options

A. Androgens are produced by the Leydig cells and have a catabolic effect on protein and carbohydrate metabolism
B. The corpus luteum secretes progesterone which is mainly responsible for development of female secondary sex organs
C. The ANF is secreted by atrial wall of heart and it decreases blood pressure
D. Aldosterone acts on kidney to increase `Na^(+) and K^(+)` reabsorption.

Answer

To solve the question "Find the correct statement," we need to analyze each of the four statements provided and determine which one is accurate based on our knowledge of biology, particularly in the context of chemical coordination and integration.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The statement discusses androgens, which are male hormones primarily produced by the testes and adrenal glands.
- It mentions that androgens have an anabolic effect, meaning they build up tissues such as muscle.
- **Conclusion:** The first statement is incorrect because it incorrectly states that androgens have a catabolic effect.

2. **Analyze the Second Statement:**
- This statement refers to the corpus luteum, which is a structure in the ovary that produces hormones like progesterone and estrogen.
- The main function of the corpus luteum is to maintain the uterine lining during pregnancy.
- **Conclusion:** The second statement is incorrect because it claims that the corpus luteum is responsible for the development of female secondary sexual characteristics, which is not its primary function.

3. **Analyze the Third Statement:**
- The third statement discusses Atrial Natriuretic Factor (ANF), which is released by the cardiac atrium.
- The primary function of ANF is to decrease blood pressure.
- **Conclusion:** This statement is correct because it accurately describes the source and function of ANF.

4. **Analyze the Fourth Statement:**
- This statement talks about aldosterone, a hormone produced by the adrenal gland that acts on the kidneys.
- Aldosterone is responsible for increasing the reabsorption of sodium and water, but it does not promote the reabsorption of potassium.
- **Conclusion:** The fourth statement is incorrect because it incorrectly states that aldosterone reabsorbs potassium.

### Final Answer:
The correct statement is the third one: "Atrial Natriuretic Factor (ANF) is secreted by the atrial wall of the heart and decreases blood pressure."

---