By 16 weeks of interuterine life, the |fetus| is about 6" long and weighs about 6 oz. The ~blood~ vessels show through the delicate, semi-transparent skin, and the body is bright pink. Downy, fine hair is starting to grow over the whole surface of the skin, and the eyebrows and eyelashes are beginning to emerge. The joints of all the limbs are moving, the fingers and toes have separated and are fully formed, and the toenails and |fingernails| are grown in. The sex of the |fetus| can clearly be determined as the external genital organs are developed. Although the |lungs| are very poorly developed, the chest of the |fetus| moves from time to time as if it were breathing. The |fetus| is now moving a lot but it is still too early for the mother to feel.
