Illustrated images of the Baby’s Development
For more information visit The Baby Centre. Images courtesy (c)
Baby at the End of 4 Weeks
About 1/4 inch. About 7/10.000 oz. Heart pulsates and pumps blood digestive system, back bone and spinal cord begin to form, small buds appear for arms and legs. Your baby is an embryo consisting of two layers of cells from which all her organs and body parts will develop.
Baby at the End of 8 Weeks
About 1 1/8 inches. About 1/4 oz. Has a face, eyes, nose, legs and tongue; eyelids are fused. Brain has taken shape . Internal organs developing. Limbs begin to form arms, elbows, forearms, hands, thighs, knees, feet. Your baby is now about the size of a kidney bean and is constantly moving. He has distinct, slightly webbed fingers.
Baby at the End of 12 Weeks
About 3 inches, 1 1/2 oz.
Hands, fingers, legs, feet
and toes are fully formed. Eyes almost fully developed, lids are still fused; tooth sockets & buds in the jaw bones form. Baby possesses
most of its organs & tissues. Heartbeat can be detected with special instrument.By now your baby is around 7 to 8 centimeters (3 inches) long and weighs about the same as a pea pod. Her tiny, unique fingerprints are now in place.
Baby at the End of 16 Weeks
About 6 1/2 to 7 inches
about 7 oz. Muscles and bones are formed. Mother may feel movement. Heartbeat is strong. Skin is bright pink, transparent. Ears, eyes, nose, mouth take final appearance. Your baby is now about 13cm (5.5in) long and weighs 140g (5oz). His skeleton is starting to harden from rubbery cartilage to bone.
Baby at the End of 20 Weeks
About 10 to 12 inches. About 1 lb. Internal organs maturing at a fast rate. Eyelids still fused. Eyebrows and hair on the head have appeared.
Eyebrows and eyelids are now in place. Your baby would now be more than 27cm (10.5in) long if you stretched out her legs.
Baby at the End of 24 Weeks
About 11 to 14 inches. About 1 3/4 lb. Skin still bright pink, wrinkled, covered with a heavy protective creamy coating. Eyelids separate, eyelashes form. Fingernails grow to ends of fingers.
Baby at the End of 28 Weeks
About 14 to 17 inches. About 2 1/2 to 3 lb. Skin still wrinkled and red. All vital organs formed: further development is mainly in size.
Baby at the End of 32 Weeks
About 16 1/2 to 18 inches. About 4 1/2 to 5 1/2 lb. Head bones are soft and flexible. Fat deposits under the skin eliminate wrinkling.
Baby at the End of 36 Weeks
About 20 inches. About 7 1/4 to 7 1/2 lb. Skin covered with creamy coating; fine hair is gone. Baby is now fully developed and ready for life outside the womb.
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