The clinical age of the unborn child is calculated from
A)ovulation.
B)conception.
C)the last menstrual period.
D)fourteen days after the last menstrual period.
E)fourteen days before the last menstrual period.

Question

Quizplus · Accepted Answer

The clinical age of the unborn child is calculated from the last menstrual period because ovulation and conception are difficult to determine with accuracy. Clinicians estimate gestational age by calculating from the first day of the last menstrual period and assuming a 28-day cycle. This estimation is then confirmed through prenatal ultrasound measurements. Therefore, choice C is the best answer.

The Clinical Age of the Unborn Child Is Calculated from