pregnancy symptoms and weeks of pregnancy

pregnancy symptoms and weeks of pregnancy

pregnancy symptoms and weeks of pregnancy

On the third week of pregnancy after conception the nervous system of the new person is pawned, starts to work pregnancy symptoms. At this time the expert in ultrasonic diagnostics sees, how heart fights, and can judge on palpitation a germ condition.

The period of a bookmark of all internal bodies (basically from the third pregnancy till the sixth weeks) is considered the second critical period of development pregnancy symptoms.

On the fourth week of pregnancy the germ quickly grows, its size increases approximately three times. There is a bookmark of internal bodies: lungs, a stomach, a liver, a pancreas, glands. There are rudiments of eyes and ears. Placenta formation begins.

The fifth week is noted by intensive growth of a brain, development of bronchial tubes and lungs. Kidneys, a rectum, a bladder are pawned. By a weekend the top finiteness becomes lopato-shaped, and bottom - lasto-shaped. The length of a germ reaches 6 mm.