Which of the following is not the function of placenta in human female

Options

A. Secrets estrogen and relaxin hormone
B. Facilitates supply of oxygen nutrients to embryo
C. Secrets oxytocin hormone during pregnancy
D. It induces foetal ejection reflex for child birth

Answer

To determine which of the following is not a function of the placenta in human females, we will analyze the functions of the placenta and the options provided.

### Step-by-Step Solution:

1. **Understand the Role of the Placenta**:
- The placenta is a vital organ that develops during pregnancy, serving as the interface between the mother and the fetus. It facilitates various functions essential for fetal development.

2. **Analyze Each Option**:
- **Option 1: Secretes estrogen and relaxin**:
- This is a function of the placenta. It produces hormones like estrogen and relaxin to support pregnancy and prepare the body for childbirth.
- **Option 2: Facilitates the supply of oxygen and nutrients to the embryo**:
- This is also a function of the placenta. It allows for the exchange of oxygen and nutrients from the mother to the fetus while removing waste products.
- **Option 3: Secretes oxytocin hormone during pregnancy**:
- This is NOT a function of the placenta. Oxytocin is primarily produced by the posterior pituitary gland, not the placenta.
- **Option 4: Induces ejection reflex**:
- This is a function of the placenta. It plays a role in the ejection of milk during breastfeeding and can influence uterine contractions during labor.

3. **Identify the Correct Answer**:
- After analyzing all options, the statement that the placenta secretes oxytocin during pregnancy is incorrect. Therefore, the answer to the question is **Option 3**.

### Final Answer:
**Option 3: It secretes oxytocin hormone during pregnancy.**