The development of the fetus during pregnancy: important trimesters
Pregnancy - is a miracle, because a woman's body is developing future life.Therefore, the period of gestation of the child is considered to be the most important and crucial stage in a woman's life.How will the child grow and develop, depends largely on the behavior, nutrition, conditions of work and rest the expectant mother.In order for the development of the fetus during pregnancy proceeded well without abnormalities, the woman should be seen by a doctor on a regular basis and perform all of its recommendations.
first trimester of pregnancy corresponds to the interval from the first to the thirteenth week.The entire first trimester of pregnancy may be called critical period, at this stage there is a bookmark all internal organs and systems of the fetus.After fertilization, ovum moves into the uterus, where it attaches to the mucosa (approximately seven days).After that starts to shape the future placenta, whose role is to protect the embryo from harmful substances and maintenance of its power and oxygen.On the fourth week, the embryo is formed by the heart, there are outgrowths (future limb) and laid authorities.During the fifth - the sixth week of the teeth begin to form, develop stomach, intestines, pancreas Diabetes and pancreas - the things you need to know , urogenital system.The ninth - tenth week in the unborn child uzhu developed liver and kidneys, urine is released into the amniotic fluid.The face of the embryo is already well discernible.By the eleventh week of a future baby first formed bone.The first movement of the embryo begins to make the twelfth week, but they have not caught a woman.By the end of the first trimester of pregnancy, the fetus reaches a length of 8-9 cm, and weighs about 7 grams.
second trimester of pregnancy is the period from the fourteenth to the twenty-fourth week.Continued growth and development of the placenta, rapidly formed bone system.On the fourteenth week the embryo is already possible to determine the blood group Blood groups - what do you know yours? and Rh factor.The work includes the organs of the gastrointestinal tract: stomach, intestines and gallbladder.It begins the formation of the central nervous system (cerebral cortex is formed from the sulci and gyri).Around the eighteenth-twentieth week the woman begins to feel fetal movements clearly.Unborn baby in the second trimester of pregnancy is already able to feel, to feel, to express emotion Emotions and culture: how to decipher the emotional code (a grimace).In addition, the baby picks up the mood of the expectant mother and with her sad or happy.
the fifth month of pregnancy continues to grow nervous and endocrine systems.The work includes almost all of the endocrine glands: pituitary, pineal, thyroid thyroid gland - is responsible for your hormones , adrenals, gonads.Spleen begins to perform the function of hematopoiesis.Leather baby in the second trimester of pregnancy is covered by vernix, which is formed by sebum and particles of the epidermis.Fetal weight by the end of the second trimester of pregnancy up to 100 grams.
third trimester of pregnancy
third trimester of pregnancy begins with the twenty-fifth week of the fortieth ends.Of course, not all births take place exactly forty weeks of pregnancy, it is wise to talk about the third trimester of pregnancy, as the last sixteen weeks.In the seventh month, the fetus is practically formed the senses, he is able to distinguish between some smells, tastes, has a visual perception (reacts to bright light), catches and distinguish sounds, both internal (the pulsation of the umbilical cord, reducing the intestine) and external.It was in the third trimester, doctors recommend the expectant mother to listen to soft music, read stories, conduct conversations with the child.
finalized formation of the cerebral cortex.The child can feel pain, and actively respond to it.Fetus begins to synthesize many biologically active substances (hormones, enzymes).The internal organs continue to develop, accumulated subcutaneous fat.By the ninth month of the baby's skin is smooth, her have vellus hair.By the end of the third trimester of pregnancy, the fetus reaches about three kilograms and its length is 50-54 cm.