Question

What does a four-week embryo look like?

Answer 1

A baby is called an embryo from the time of conception till eight weeks of development. At the time of completion of the eight weeks, the embryo is called a fetus. At 4 weeks pregnant, the baby is smaller than a poppy seed.

Complete answer:
As the fertilized egg grows, a watertight sac forms around it gradually filling it with fluid called the amniotic sac and this very much helps in cushioning the embryo.

Simultaneously, the placenta also develops which is a round flat organ that helps in transferring nutrients from the maternal body to the embryo in turn transferring the waste from the embryo into the mother's body through a tube that is attached to the placenta with the embryo known as Umbilical cord.

Then a primitive phase will take form with large dark circles for the eyes. The mouth, lower jaw, and throat are now developing. The blood cells will take shape and the process of circulation will also begin. The tiny heart will beat 65 to 75 beats per minute by the end of the fourth week. At the end of the month, the embryo will be a quarter-inch long, which will be smaller than a grain of rice when it is compared.

Note:
At 4 weeks pregnant, the baby is very small. The baby is a little over half an inch in size. Eyelids and ears are forming, and we can see the tip of the nose. The arms and legs are well-formed. The fingers and toes grow longer and more distinct.