Find the odd one out with respect to hormones secreted by placenta .

Options

A. Estrogens
B. Human chorionic gonadotrophin (hCG)
C. Oxytocin
D. Human placental lactogen (hPL)

Answer

To solve the question of finding the odd one out with respect to hormones secreted by the placenta, we will analyze each option provided:

### Step 1: Identify the hormones listed
The hormones mentioned in the question are:
- A. Estrogen
- B. Human Chorionic Gonadotropin (HCG)
- C. Oxytocin
- D. Human Placental Lactogen (HPL)

### Step 2: Determine the source of each hormone
1. **Estrogen**: This hormone is produced by the placenta during pregnancy, as well as by the ovaries.
2. **Human Chorionic Gonadotropin (HCG)**: This hormone is produced by the placenta and is crucial for maintaining pregnancy.
3. **Oxytocin**: This hormone is produced by the posterior pituitary gland, not by the placenta.
4. **Human Placental Lactogen (HPL)**: This hormone is produced by the placenta and plays a role in metabolism and fetal nourishment.

### Step 3: Compare the hormones
- Estrogen, HCG, and HPL are all hormones that are produced by the placenta.
- Oxytocin, however, is produced by the posterior pituitary gland and not by the placenta.

### Step 4: Identify the odd one out
Since Oxytocin is the only hormone listed that is not produced by the placenta, it is the odd one out.

### Conclusion
The answer to the question is **C. Oxytocin**.

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