Third Trimester: Difference between revisions

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== Third Trimester ==
(Clinical Week 28)  
(Clinical Week 28)  



Revision as of 13:21, 5 August 2009

(Clinical Week 28)

Week
Stage
Event
Clinical third trimester File:EFsizeactual.jpg Sense - 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
 
30
   

Genital male gonad (testes) descending

31
 
32
   
33
  Neural brain cortical sulcation - primary sulci present PMID:11158907
34
  Neural brain cortical sulcation - insular, cingular, and occipital secondary sulci present PMID:11158907
35
   
36
 
37
   
38
Birth File:Birthsm.gif 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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Dr Mark Hill 2009, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G