Questions: Which statements are true regarding the embryonic stage of prenatal development? Select all that apply. Begins when the zygote attaches to the uterine wall Lasts approximately 6 weeks Organ development begins Begins two weeks after conception Cell division slows down

The statements that are true regarding the embryonic stage of prenatal development are:

• Begins when the zygote attaches to the uterine wall
• Lasts approximately 6 weeks
• Organ development begins
• Begins two weeks after conception

Explanation for each option:

1. Begins when the zygote attaches to the uterine wall: This is true. The embryonic stage starts when the zygote (now called a blastocyst) implants itself into the uterine wall.

2. Lasts approximately 6 weeks: This is true. The embryonic stage typically lasts from the end of the second week to the eighth week of pregnancy, which is approximately 6 weeks.

3. Organ development begins: This is true. During the embryonic stage, the process of organogenesis begins, where the major organs and structures of the body start to form.

4. Begins two weeks after conception: This is true. The embryonic stage begins around the end of the second week after conception, following the germinal stage.

5. Cell division slows down: This is false. During the embryonic stage, cell division is rapid as the embryo undergoes significant growth and differentiation.

Summary: The true statements regarding the embryonic stage of prenatal development are:

• Begins when the zygote attaches to the uterine wall
• Lasts approximately 6 weeks
• Organ development begins
• Begins two weeks after conception