which of the following groups of hormones are produced in women only during pregnacy?

Options

A. hCG, hPL, relaxin
B. Estrogen, progesterone ,hCG
C. Cortisol, prolactin, thyroxine
D. Prolactin, progesterone, hCG

Answer

To determine which group of hormones is produced in women only during pregnancy, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of the Placenta**:
- During pregnancy, the placenta forms as a connection between the mother and the fetus. It is crucial for the exchange of nutrients and waste.

2. **Identify Hormones Produced by the Placenta**:
- The placenta secretes several hormones that are essential during pregnancy. Key hormones include:
- Human Chorionic Gonadotropin (HCG)
- Human Placental Lactogen (HPL)
- Relaxin

3. **Evaluate Each Option**:
- **Option 1: HCG, HPL, Relaxin**:
- All three hormones are produced exclusively during pregnancy by the placenta. This option is a strong candidate for the correct answer.
- **Option 2: Estrogen, Progesterone, HCG**:
- While HCG is produced during pregnancy, both estrogen and progesterone are also produced by the ovaries before and after pregnancy. Thus, this option is incorrect.
- **Option 3: Cortisol, Prolactin, Thyroxine**:
- Cortisol and thyroxine are produced before and after pregnancy. Prolactin is primarily involved in milk production and is secreted after pregnancy. Therefore, this option is incorrect.
- **Option 4: Prolactin, Progesterone, HCG**:
- Prolactin is secreted after pregnancy, and progesterone is produced before and after pregnancy. This option is also incorrect.

4. **Conclusion**:
- The only group of hormones that are produced in women only during pregnancy is **Option 1: HCG, HPL, and Relaxin**.

### Final Answer:
The correct answer is **HCG, HPL, and Relaxin**.

---