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The Embryo is 1/16th to 1/8th inch long. A bunch of cells have formed into a C-shape, and there is a groove on the Embryo's back that will eventually seal and develop into the neural tube
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The heart of the Embryo begins to pump blood, and the neural tube that will become the spine closes. Arm and leg buds begin to form.
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The head is about 1/3rd the size of the entire Embryo. The brain and face are developing rapidly.
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Brainwave activity begins. webbed fingers and toes begin to form, and subtle movements begin.
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Now being called a Fetus, The heart of the Fetus is almost completely developed, and the arms develop bones.
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Eyelids begin to fuse to protect eyes. The Fetus begins doing occasional breathing movements even though it gets its oxygen through the umbilical cord.
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Nearly all the organs and body structures are formed and starting to function. Genitals start taking form of specific gender of Fetus.
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The growth of the Fetus' head slows down to let the rest of the body grow. Arms, legs, and fingers are starting to resemble a newborn's.
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Face starts developing individual characteristics, and Fetus starts developing muscles and joints.
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The Fetus can wince and grimace due to facial muscles developing and flexing. The liver starts to secrete bile.
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The nose, lips, and taste buds are formed, and the head is covered by a fine, soft hair called Lanugo
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The Fetus' bone begins to harden.
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Brown fat, a special type of fat is being dispersed to help the Fetus with body heat generation.
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Teeth have started to form in the Fetus, and can also start to hear sounds.
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genetic material for future grandchildren begin to develop.
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A white substance called Vernix Caseosa protects the skin from its aqueous environment, and the Fetus' sweat glands form.
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Taste buds are forming on her tongue. The eyelids are still sealed, but the eyes are active.
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The organ system is becoming more functional and specialized.
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The eyes are formed, but lack pigmentation
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Real hair begins to grow on the head, and the skin becomes less translucent.
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The Fetus starts exhibiting sleeps by having active and inactive periods.
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The eyelids separate causing the eyes to open. the sense of sight and sound expand greatly for the Fetus.
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Everything still developing for the Fetus in the womb.
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The Fetus can taste and smell, and the eyes can produce tears.
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The Fetus' adrenal glands are producing a chemical which can be made into serial by the placenta.
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Fetus' eyes are able to track light while the brain continues to rapidly develop.
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The Fetus is not really developing anything new, while other human functions are still trying to form.
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All five senses are developed, and sleep begins for the Fetus.
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The Fetus is in the process of receiving antibodies from the mother due to its immune system still being immature.
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The Fetus can blink, and the brain is developing fast while in the womb
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The nervous and immune system are still maturing.
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The Fetus is usually 20.5 inches in length.
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Fetus begins to move into delivery position. Fetus intestines build up meconium to release as a bowel movement.
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Nails are done growing.
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The Fetus adds neural connections, hair, and weight, and is almost primed for birth.
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Fetus is fully formed, and ready for birth.
