Pick up the hormone which is not secreted by human placenta

Options

A. hCG
B. hPL
C. Prolactin
D. Estrogen

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks to identify a hormone that is not secreted by the human placenta from the given options.

2. **List the Options**: The options provided are:
- A) HCG (Human Chorionic Gonadotropin)
- B) HPL (Human Placental Lactogen)
- C) Prolactin
- D) Estrogen

3. **Identify Hormones Secreted by the Placenta**:
- **HCG**: This hormone is secreted by the placenta shortly after implantation. It helps maintain the corpus luteum and supports the early stages of pregnancy.
- **HPL**: This hormone is produced by the placenta and plays a role in regulating maternal metabolism and fetal growth.
- **Estrogen**: This hormone is also produced by the placenta and is important for maintaining pregnancy and regulating various functions in the body.

4. **Identify the Source of Prolactin**: Prolactin is primarily secreted by the anterior pituitary gland, not the placenta. Its main function is to promote milk production in the breasts after childbirth.

5. **Conclusion**: Since prolactin is not secreted by the human placenta, the correct answer to the question is option C) Prolactin.

### Final Answer:
The hormone which is not secreted by the human placenta is **C) Prolactin**.