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New Life
First wins the most active and lucky sperm, then a person is born. What between?
Sperm in the folds of the mucous membrane of the fallopian tubes is moving towards the egg.
Two sperm contact with the shell of the egg. Enzymes contained in the sperm head, dissolved shell of the egg. But the genetic material of the sperm is involved in fertilization.
Longitudinal section of the sperm. The genetic material contained in the sperm head.
Embryo, attached to the endometrium (8 days).
The development of the embryo. Gray color - the future brain. (22 days).
Mortgaging and heart begins to beat. (24 days).
V-shaped development of blood vessels around the joints of the skull bone. (9 weeks).
The dimensions of the embryo is 3 cm. The embryo becomes a fetus. (10 weeks).
20 cm length of the fruit. (20 weeks).
The uterus becomes cramped. After 4 weeks, the child will see the white light. (36 weeks).