The heart,lungs,and brain begin to form during the ________ period of prenatal development.
A)fetal
B)zygotic
C)embryonic
D)germinal

Question

Quizplus · Accepted Answer

The embryonic period is the second period of prenatal development that takes place from the end of the second week to the eighth week after fertilization. During this period, major organ systems begin to form, including the heart, lungs, and brain. The fetal period, which follows the embryonic period, involves further growth and development of these organ systems. The germinal period is the first period of prenatal development during which the zygote divides and implants in the uterine wall, and does not involve the formation of major organ systems.

The Heart,lungs,and Brain Begin to Form During the ________ Period