Progesterone is secreted from :

Options

A. Testes
B. Adrenal gland
C. Pituitary gland
D. corpus luteum

Answer

To determine where progesterone is secreted from, we can analyze the options provided in the question step by step.

### Step 1: Understand the Role of Progesterone
Progesterone is a hormone that plays a crucial role in the menstrual cycle and in maintaining pregnancy. It is primarily involved in preparing the uterus for a fertilized egg and supporting pregnancy.

### Step 2: Analyze the Options
The options given are:
1. Testis
2. Adrenal gland
3. Pituitary gland
4. Corpus luteum

### Step 3: Evaluate Each Option
- **Testis**: The testis is primarily responsible for the production of male sex hormones, such as testosterone. It does not secrete progesterone.

- **Adrenal Gland**: The adrenal glands produce a variety of hormones, including cortisol and adrenaline, but they are not the primary source of progesterone.

- **Pituitary Gland**: The pituitary gland is known for producing several hormones that regulate various bodily functions, but it does not secrete progesterone.

- **Corpus Luteum**: After ovulation, the ruptured Graafian follicle transforms into the corpus luteum, which is responsible for secreting progesterone. This is the main source of progesterone during the luteal phase of the menstrual cycle.

### Step 4: Conclusion
Based on the analysis, the correct answer is that progesterone is secreted from the **corpus luteum**.

### Final Answer
Progesterone is secreted from the corpus luteum.

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