Third Trimester: Difference between revisions
From Embryology
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==Introduction== | ==Introduction== | ||
[[File:Frazer006_bw600.jpg|right|400px]] | |||
:{{Template:Fetal Links}} | :{{Template:Fetal Links}} | ||
==Third Trimester Timeline== | |||
* IgG to specific maternal antigens transferred passively across the placenta during the last trimester of pregnancy | * IgG to specific maternal antigens transferred passively across the placenta during the last trimester of pregnancy | ||
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| Clinical third trimester | | Clinical third trimester | ||
| [[File:Fetal_weight_change.jpg|100px]] [ | | [[File:Fetal_weight_change.jpg|100px]] [[Sensory_-_Hearing_and_Balance_Development|Hearing]] 3rd Trimester - vibration acoustically of maternal abdominal wall induces startle respone in fetus. | ||
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| <center>28</center> | | <center>28</center> | ||
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| [ | | [[Respiratory_System_Development|Respire]] Month 7 - respiratory bronchioles proliferate and end in alveolar ducts and sacs | ||
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[ | [[Genital_System_Development|Genital]] male gonad (testes) descending | ||
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| <center>33</center> | | <center>33</center> | ||
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| [ | | [[Neural_System_Development|Neural]] brain cortical sulcation - primary sulci present [http://www.ncbi.nlm.nih.gov/pubmed/11158907 PMID:11158907] | ||
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| <center>34</center> | | <center>34</center> | ||
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| [ | | [[Neural_System_Development|Neural]] brain cortical sulcation - insular, cingular, and occipital secondary sulci present [http://www.ncbi.nlm.nih.gov/pubmed/11158907 PMID:11158907] | ||
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Revision as of 11:35, 6 September 2010
Introduction
Fetal Links: fetal | Week 10 | Week 12 | second trimester | third trimester | fetal neural | Fetal Blood Sampling | fetal growth restriction | birth | birth weight | preterm birth | Developmental Origins of Health and Disease | macrosomia | BGD Practical | Medicine Lecture | Science Lecture | Lecture Movie | Category:Human Fetus | Category:Fetal | |||
|
Third Trimester Timeline
- IgG to specific maternal antigens transferred passively across the placenta during the last trimester of pregnancy
(Clinical Week 28-29)
Event | ||
Clinical third trimester | Hearing 3rd Trimester - vibration acoustically of maternal abdominal wall induces startle respone in fetus. | |
Respire Month 7 - respiratory bronchioles proliferate and end in alveolar ducts and sacs | ||
Genital male gonad (testes) descending | ||
Neural brain cortical sulcation - primary sulci present PMID:11158907 | ||
Neural brain cortical sulcation - insular, cingular, and occipital secondary sulci present PMID:11158907 | ||
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 |
References
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Cite this page: Hill, M.A. (2024, April 25) Embryology Third Trimester. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Third_Trimester
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G