24 weeks of pregnancy

Even at this early stage, vital parts of your twins' nervous system, including the brain, back bone, spinal cord and nerves, begin to develop.... Your twins' heart and circulatory system begin to appear.... and when you are 5 weeks pregnant, your twins are the size of a poppy seed.... Their important body organs begin to develop, including the heart and blood.. Their bodies soon begin, their limbs (arms and legs) begin to grow. bud they will beat....primary placenta: the cells of the primary placenta begin to penetrate the uterine wall and create a space to collect blood and flow blood to the baby to deliver food and oxygen...they produce the necessary proteins....water bag: until the next week, each cavity contains an embryo and plays the role of its home during pregnancy....Dr... Taybeh Hemmati

Dr.. Tayyaba Hemmati, surgeon and obstetrician Subspecialty infertility fellowship from Tehran University

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