Question

Which external genital structures become distinguishable and well-developed by the end of 12 weeks?

Options

• External genital organs

• Perineal body

• Urinary meatus

• Internal reproductive organs

Answer 1

By the end of 12 weeks (end of first trimester), the external genital organs are distinguishable and well-developed. This development allows for early determination of fetal sex through ultrasound imaging.