WEEK 7: THE UMBILICAL CORD APPEARS:
Seven weeks into your pregnancy, your baby is 1/3 of an inch long -- a little bigger than the top of a pencil eraser.He or she weighs less than aspirin tablet.
The umbilical cord -- your link between the baby and placenta -- is now clearly visible. The cavities and passages needed to circulate spinal fluid in your babies brain have formed, but your baby's skull is still transparent.
The arm bud that sprouted last week now resembles a tiny paddle. Your baby's face takes on more definition this week, as a mouth perforation, tiny nostrils and ear indentations become visible.
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