Pregnancy is one of the happiest periods of life for women during which there is a development of the child. On average development of the kid in a womb of mother takes 38-40 weeks. During this time there is a formation of vitals of a fruit and also the foundation for its future existence in the outside world is laid. Better to understand the organism, it will be useful for future mom to learn about what changes happen to her child and as development of the kid in a womb proceeds.
Instruction
1. Merge of a spermatozoon and an ovum is considered the beginning of origin of life and the first stage of the child. After a while a germ, falling to a uterus cavity, it is attached to its wall and becomes a whole with mother.
2. In the first weeks of development of the kid in a womb of mother his internals and systems begin to be formed. Since 2nd month the warm activity, nervous system develop, eyes, a mouth, ears, a nose are defined. Also muscles and the child's backbone begin to be formed.
3. On the 12th week the development of the kid in a womb of mother is characterized by various changes in a vestibular mechanism. The embryo begins to move, reacts to light, sounds, can suck a finger, hide in a palm the face. On the 16th week the placenta connecting the child with mother's organism begins to function.
4. Approximately on the 20th week of pre-natal development of the kid there is his stir, at the same time mom can feel its movement. At this time the structure of its systems and bodies is improved. On 4-5 month the doctors can define a sex of the child.
5. In the 2nd half of pregnancy the development of the kid in a womb of mother gains momentum. The child begins to grow in length, to gain weight. It reacts to mother's voice. The integument of the kid is thickened and takes a form of skin of the newborn.
6. On the 32nd week of development of the kid in a maternal womb there is a development of the immune system. He receives from mother of a cage - immunoglobulins which will protect it after the birth from diseases. From 9th month of pregnancy the kid begins to put on weight significantly. The uterus for it becomes close, and stirs of the child are more notable.
7. Since 37th week of pregnancy and before childbirth the child is already created and gains weight in a womb. It can last several weeks. Childbirth is considered as timely if they passed on the term of 38-40 weeks of pregnancy. The healthy kid whose weight about 3 kg and height more than 50 cm is born.