Template:Third Trimester Timeline: Difference between revisions

Revision as of 16:18, 12 May 2016

Third Trimester Timeline (GA Clinical Week 28) Third Trimester
Week	Stage	Event
	Clinical third trimester	Hearing 3rd Trimester - vibration acoustically of maternal abdominal wall induces startle respone in fetus.
27
28		Respire Month 7 - respiratory bronchioles proliferate and end in alveolar ducts and sacs
29		Tooth Development Week 29 - Permanent premolars (correspond to the milk molars) appear.
30		Genital male gonad (testes) descending
31
32		Nail Development fingernails reach digit tip
33		Neural brain cortical sulcation - primary sulci present^[1]
34		Neural brain cortical sulcation - insular, cingular, and occipital secondary sulci present^[1]
35
36		Nail Development toenails reach digit tip Lens Development - lens growth and interocular distance plateaus after 36 weeks of gestation^[2]
37
38	Birth	Clinical Week 40 Heart pressure difference closes foramen ovale leaving a fossa ovalis Thyroid TSH levels increase, thyroxine (T3) and T4 levels increase to 24 h, then 5-7 days postnatal decline to normal levels Adrenal - zona glomerulosa, zona fasiculata present

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+! colspan=3|Third Trimester Timeline ({{GA}} Clinical Week 28) [[Third Trimester]]
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-| Clinical third trimester ({{GA}} Clinical Week 28) [[Third Trimester]]
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 | [[File:Fetal_size_change.jpg|90px|link=Fetal Development]] [[Sensory_-_Hearing_and_Balance_Development|Hearing]] 3rd Trimester - vibration acoustically of maternal abdominal wall induces startle respone in fetus.