Emily and her husband are thrilled as they peer into Emily's uterus by means of an ultrasound. The physician reports that the pregnancy appears normal, and that their baby's fingers, toes, heart, and circulatory system are developing as expected. The couple learns that the baby is only an inch long. Given this information, the current stage of prenatal development is the _______.

A) embryonic period
B) germinal period
C) zygotic period
D) fetal stage

Question

stephanie rodriguez · Accepted Answer

Final Answer : A, Explanation :  The embryonic period typically lasts from the second to the eighth week of prenatal development, during which the major organs and body systems begin to form. In this scenario, the physician's report of the development of fingers, toes, heart, and circulatory system suggests that the baby is in the embryonic period. The size of only one inch is consistent with this stage as well. The germinal period lasts from conception until the zygote (fertilized egg) implants in the uterine wall, which is usually within the first two weeks. The zygotic period is another term for the germinal period. The fetal stage begins around the ninth week and lasts until birth.

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