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Size: of a pin head
Description: brain and spinal cord develop, internal organs and circulatory system begin to form, heart begins to beat. -
Size: 6 mm
Description: bones begin to form, facial features begin to take shape -
Size: about an inch
Description: nostrils, mouth, lips, eyelids form, buds for teeth appear, fingers and toes almost complete origins complete but still immature -
Size: about 3 inches
Description: can suck thumb, swallow hiccup, and move around, facial features become clear -
Size: about 6.5 - 7 inches
Description: Hair, eyelashes, and eyebrows appear, teeth continue to develop, origins are maturing, baby becomes move active -
Size: about 8-10 inches
Description: fat deposits under skin, but fetus appears wrinkled, breathing movements begin -
Size: about 10-12 inches
Description: has periods of activity followed by periods of of rest -
Size: about 14-16 inches
Description: rapid weight gain, reacts to loud noises with a reflex jerking action, moves into a head-down position -
Size: 17-18 inches
Description: weight gain continues, skin becomes smooth as fat deposits continue, movement decreases as the fetus has less room to move, acquires disease-fighting antibodies from mother's blood, descend's to pelvis, ready for birth.
