In human development the embryos heart is formed

Options

A. after one month
B. after one week
C. after two months
D. after six months

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks when the heart of the human embryo is formed during development.

2. **Fertilization and Zygote Formation**: After fertilization, a zygote is formed. This is the initial stage of human development.

3. **Cleavage and Blastocyst Formation**: The zygote undergoes a series of cell divisions known as cleavage, leading to the formation of a structure called the blastocyst.

4. **Implantation into the Uterus**: The blastocyst then implants itself into the uterine wall, where it begins to receive nutrients from the mother through a structure called the placenta.

5. **Development of the Heart**: As the embryo develops, one of the first significant organs to form is the heart. The heart begins to develop early in the embryonic stage.

6. **Timeline of Heart Development**: The heart of the embryo is typically formed within the first month of development, specifically around four weeks after fertilization.

7. **Conclusion**: Therefore, the correct answer to the question is that the embryo's heart is formed after one month.

**Final Answer**: The embryo's heart is formed after one month.

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