Читать книгу The Mother and Her Child - Lena K. Sadler - Страница 24

In the fourth and fifth weeks, the lungs and the pancreas may be found, the heart develops, the nervous system has taken on more definite form, and several of the larger blood-vessels are appearing.

By the eighth week, by the most wonderful and complicated processes of overlapping, pushing out, indentation, enfolding, budding, pressing, and curving, the majority of the important structures are formed—the eyes, ears, nose, hands, feet, abdominal organs, and numerous glands. Thus, at the end of two months, almost every structure and organ necessary to life is present in a rudimentary state.