At this stage of 10 weeks pregnancy, the baby has developed at a very fast pace and resembles a kidney bean in size. The CR length or the crown to rump length of the baby at this stage is about 1.25″ to 1.68″. Now the developing baby starts gaining weight and the approximate weight of the baby at 10 weeks pregnant stage is 5 grams. The baby has grown and developed tremendously during the past nine weeks.

Of all pregnancy stages, this one is a landmark period of baby’s development. By this time, the total body plan of the baby has been laid down. The baby will keep growing and developing for the remaining period of pregnancy. The tail portion disappears now in the 10th week. The fingers and toes which had web like appearance in the ninth week get separated fully. The tooth and taste bud formation takes place during this period. The brain is growing at an amazing rate and you will be surprised to know that new neurons are being produced at the rate of a quarter of a million per minute. The development of embryonic heart is completed in the 10th week of pregnancy. The external genitalia have not appeared by now, and may be visible by the 11th week. If the baby is a male child, then the testes have already started producing the male hormone, testosterone.