Month 8
External Features: By the eighth month, the skin is pink and smooth, the eyes are capable of reacting to light and the fingernails have grown long enough to reach the tip of the fingers.
Organ Systems: Internally, at the eighth month, the hyaloid vessels nourishing the eye lens, regresses and the testes begin entering the scrotum.
Within the three months of the third trimester, a fetus goes from incomplete development to complete, fetal maturity.
Month 7
External Features: At seven months, the fetus continues the development of hair and the scalp hairs grow beyond the length of the thin lanugo hairs that developed during the second trimester. Eyelashes are well developed and eyelids begin to open.
Organ Systems: Internally, the fetus' brain continues to develop and throughout the body subcutaneous fat storage begins. In male fetuses the testes continue descending into the scrotum.
