Question

Which structures develop in the fetus during the first trimester of pregnancy? Check all that apply. brain spine genitals moles

Answer 1

brain; spine; genitals

Step-by-step explanation:

The embryo and subsequently the fetus develops rapidly during the first three months of pregnancy (after 8 weeks, an embryo is referred to as a fetus). By the end of 4 weeks, the brain and spinal cord begin to form from the neural tube, and many organs, also begin their development. For example, the heart forms from day 18 after conception, and it begins to beat from day 22 to 28. During weeks 9 weeks to 12 weeks, the external genital organs are developed. At the final of the third month, all major body systems (i.e., nervous, digestive, circulatory, and urinary systems) continue to develop and function.