Fetal Developement

Week 1.....The ovum (egg) is fertilized, divided, attatched to the uterus.

Week 2.....The embryonic disk is formed which will generate all organs and human tissues.

Week 3.....The first body which is consisted of primitive spine, brain, and spinal cord.

Week 4.....Heart, blood circulation, and digestive system are formed. The embryo is one-fifth of an inch long.

Week 5.....The heart begins to pump blood: limb buds appear, divisions of brain are formed.

Week 6.....Eyes and ears begin to develop.

Week 7.....The face is well developed with eyes, nose, lips and tongue.

Week 8.....The embryo is about one inch long. Its heart beats about 40-80 times a minute.

Week 9.....The baby's sex is determined. Eyelids are completely formed.

Week 10.....The embryo is now called fetus. Blood and bone cells form. The baby makes the first movement.

Week 11.....Organs such as liver begin to function.

Week 12.....Breathing begins with a lung. The fetus sucks his thumb.

Week 14.....The muscles and skeleton are matured. The nervous system begins some control. Blood vessels develop rapidly.

Week 15.....Hands grasp and feet kick.

Week 16.....All human organs and structures are completely formed.

Week 19.....Eyebrows, eyelashes, head hair are formed.

Week 20.....The fetus now has a regular schedule of sleeping, turning, sucking, and kicking.

Week 22.....The skeleton is developed rapidly.

Week 23.....Eyelids open and close.

Week 24.....The fetus weights about 2 pounds.

Week 26.....The baby now can breathe, swallow, and regulate his body temperature.

Week 30.....Fat deposits are formed underneath the skin.

Week 31.....The digestive tract and lungs are fully matured.

Week 32.....The baby is now about 14 inches long.

Week 33.....The baby fills up the uterus.

Week 38.....Full term pregnancy


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