Beginning of week 9: the head is about half the fetal size, but growth of the body in CR length more than doubles by the end of week 12.
One sees a broad face, eyes widely separated, ears low set, and eyelids fused so that the conjunctival sacs are closed.
Beginning of week 9, the legs are short and thighs relatively small, but by the end of week 12, the upper limbs reach relatively normal lengths, even though the lower limbs are not well developed and are relatively shorter than normal.
The external genitalia of male and female appear similar until end of week 9.
Intestinal loops are clearly seen in the proximal end of the umbilical cord until the middle of week 10 when they return to the abdomen.
By the end of week 12, the fetus will react to stimuli (seen in aborted fetuses).