2010 BGD Practical 12 - Third Trimester

Practical 12: Embryo to Fetus | Second Trimester | Third Trimester | Birth | Neonatal | Abnormalities

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Introduction

Practical 12: Embryo to Fetus | Second Trimester | Third Trimester | Birth | Neonatal | Abnormalities

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Additional Information

The following information is a detailed timeline of third trimester development and content does not form part of the current practical class.

Third Trimester

(Clinical Week 28)

Week	Stage	Event
	Clinical third trimester	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	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

Glossary Links

Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link

2010 BGD: Lecture 1 | Lecture 2 | Practical 3 | Practical 6 | Practical 12

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Cite this page: Hill, M.A. (2024, April 18) Embryology 2010 BGD Practical 12 - Third Trimester. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2010_BGD_Practical_12_-_Third_Trimester

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G