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First trimester fetal development facts & pictures


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  #1  
May 3rd, 2011, 09:09 PM
Gaby&Emmy'sMama's Avatar aka NZ-Emma
Join Date: Aug 2005
Location: Christchurch, NZ
Posts: 56,619
Here are some general facts about fetal development in the 1st trimester!

Week 3

- brain, spinal cord, heart & gastrotintestinal tract begin to form

Week 4 & 5
- arm & leg buds are visible, but not clearly distinguishable
- heart begins beating & steadily increases, reaching its peak at 9 weeks
- placenta begins to form & produce important hormones
- structures that will become the eyes & ears start forming
- blood begins moving through main vessels
- embryo is 1/4" long by the end of week 5

Week 6

- lungs, jaw, nose, palate begin to form
- hands and feet have webbed structures that'll become toes & fingers
- brain continues forming
- vaginal u/s may detect an audible heartbeat
- embryo is 1/2" long by the end of week 6

Week 7

- every essential organ has begun forming
- hair & nipple follicles are forming
- eyelids & tongue begin forming
- elbows & toes are more visible as embryo begins to straighten out

Week 8
- ears continue forming internally & externally
- bones are beginning to form
- muscles are beginning to contract
- facial features continue to mature
- the embryo is 1" long by the end of week 8

Week 9-13
- week 9 = embryo becomes a fetus
by the end of week 13:
- genetalia have clearly formed into male or female, but can't yet be clearly seen on u/s
- the eyelids close & won't open again until the 28th week of pregnancy
- the fetus can make a fist
- buds for baby teeth appear
- the head is nearly half the entire size of the fetus
- the fetus is about 3" long & weighs 1oz by the end of week 13


and now for some images!!! the real photos are after the u/s photos - just a warning incase some people feel uncomfortable looking at those photos!

1st trimester ultrasound images

4 weeks LMP


6 weeks LMP


8 weeks LMP



10 weeks LMP



12 weeks LMP







REAL embryonic & fetal images


4 weeks LMP



6 weeks LMP



8 weeks LMP


10 weeks LMP



12 weeks LMP
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  #2  
May 15th, 2011, 12:12 AM
BoobyDutyAgainJen's Avatar Proud Mom & Birth Mom
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Location: Massachusetts
Posts: 28,941
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Great info!! So cool!
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  #3  
May 17th, 2011, 09:32 PM
Gaby&Emmy'sMama's Avatar aka NZ-Emma
Join Date: Aug 2005
Location: Christchurch, NZ
Posts: 56,619
thanks I don't know about everyone else, but I absolutely love learning about fetal development & seeing pictures of babies at the point in pregnancy I'm at... (well, when I was pregnant, obviously!)
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  #4  
June 2nd, 2011, 08:24 PM
Doodlebug06's Avatar Doodlebug
Join Date: May 2011
Location: US
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How do they get the "real" images?? I prob sound dumb but I'm confused.
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  #5  
June 4th, 2011, 01:16 AM
NutMeg76's Avatar Platinum Supermommy
Join Date: Oct 2006
Location: United States
Posts: 20,687
Some of the real pictures are taken when they go in to remove an ectopic pregnancy

This is from an interview with the artist that took most of hte pictures of fetuses:
Quote:
To be able to show the development of the foetus at all from the very earliest stage, I used macro-lenses and wide-angled special optics, manufactured specially for me by Karl Storz in Germany and Jungners Optiska in Stockholm. And for technical reasons related to photography, I had to use foetuses from what are called extrauterine pregnancies. But I have also shot living foetuses in the womb using an endoscope. These days, I work with ultrasound and three-dimensional pictures taken through the skin from outside the body. It is a tremendously exciting technique, although it still doesn’t reach the same technical quality as my old pictures. But it has allowed me to capture the facial expressions of foetuses, for example, which I couldn’t do before.
-Lennert Nilson
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Last edited by NutMeg76; June 4th, 2011 at 01:29 AM.
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  #6  
June 11th, 2011, 06:22 PM
Jaz.MomTo1's Avatar hoping & praying
Join Date: Oct 2008
Location: Southern Belle
Posts: 1,518
Thanks for posting this! The info is great!
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