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How fast does a baby develop in the second and third trimester of pregnancy?
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Dr. James Ferguson
Pediatrics
In brief: Develope /grow
The babies major structures are defined and recognizable by the end of the first trimester. Elaboration of structure ( finish work ) for things like kidneys, brain, intestine, etc continue thru the 2nd while the third trimester is basically weight gain & some lung work.

In brief: Develope /grow
The babies major structures are defined and recognizable by the end of the first trimester. Elaboration of structure ( finish work ) for things like kidneys, brain, intestine, etc continue thru the 2nd while the third trimester is basically weight gain & some lung work.
Dr. James Ferguson
Dr. James Ferguson
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