Fetal Development

The baby may begin to move, the baby's muscles are still developing. Hair begins to grow on the baby's head, the baby's shoulders, back, and temples are covered by a soft fine hair called lanugo. The baby is covered in whitish coating called vernix caseosa, thought to protect baby's skin from the long exposure to the amniotic fluid. This coating is shed just before birth.

veins are visible through the baby's translucent skin. The baby's finger and toe prints are visible. The eyelids begin to part and the eyes open.The baby responds to sounds.

The baby's hearing is fully developed, the baby responds to sounds, light and pain. The baby moves around frequently.

The baby will continue to grow and mature, the baby's brain is growing rapidly. The baby can see and hear. Most internal systems are well developed, but the lungs may still be immature.

The baby will continue to grow and mature, and the lungs are almost fully developed. The baby's reflexes are coordinated so he or she can blink, close their eyes, turn their head, grasp firmly, and respond to sounds, light, and touch. The baby moves it self to prepare for delivery.

While the baby is developing a water sac forms around it witch helps cushion the growing embryo. The placenta will help which transfers nutrient to the baby. The mouth, lower jaw, and throat begin to develop. Blood cells are taking shape, and circulation will begin. The tiny heart will beat 65 times a minute by the end of the 4th week.

The baby's facial features continue to develop, the ears begin to develop, tiny buds begin to form growing into arms and legs, the fingers toes and eyes begin to form. Brain, spinal cord, neural tissue of the central nervous system is well formed. Bone starts to take place of cartilage.

The baby's arms, hands, fingers, feet, and toes are fully formed. The baby can open and close its hands and mouth, Fingernails and toenails begin to form teeth are forming. The baby's reproductive organs also develop, but the baby's gender is difficult to tell. By the end of the first month the baby is fully formed. All the organs and extremities are present and will continue to mature in order to become functional.The circulatory and urinary systems are working and the liver produces bile.

The baby's heart beat is able to be detected, the fingers and toes are fully developed. Eyelids, eyebrows, eyelashes, nails, and hair are formed, teeth and bones become denser. The nervous system is starting to function, the reproductive organs and genitalia are now fully developed(can now tell if your having a boy or a girl).