Estrogen and progesterone are secreted by

Options

A. placenta
B. ovum
C. testis
D. kidney

Answer

**Step-by-Step Solution:**

1. **Identify the hormones in question**: The hormones we are discussing are estrogen and progesterone.

2. **Understand the source of these hormones**: Estrogen and progesterone are primarily produced by the ovaries in females. However, during pregnancy, their production also involves other structures.

3. **Consider the role of the placenta**: The placenta is an organ that develops in the uterus during pregnancy. It serves as a connection between the developing fetus and the mother and functions as a temporary endocrine gland.

4. **Hormonal secretion during pregnancy**: During pregnancy, the placenta secretes several hormones, including estrogen and progesterone, to maintain the pregnancy and support fetal development.

5. **Review the options provided**:
- Option 1: Placenta - Correct, as it secretes estrogen and progesterone during pregnancy.
- Option 2: Ovum - Incorrect, as it does not secrete hormones.
- Option 3: Testis - Incorrect, as it primarily secretes testosterone.
- Option 4: Kidney - Incorrect, as it is primarily an excretory organ and does not secrete these hormones.

6. **Conclude the answer**: Therefore, the correct answer is that estrogen and progesterone are secreted by the placenta.

**Final Answer**: Estrogen and progesterone are secreted by the placenta.

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