Fetal Development - 10 Weeks

From Embryology

Introduction

Embryo/Fetus Size Comparison

This page is a link to images from a 10 week female fetus approximately 40 mm in size. This stage of development is after the embryonic period (up to week 8), but only 2 weeks into early fetal development. To see other images from this early fetal stage see Category:Week 10.

The fetal period is a time of extensive growth in size and mass as well as differentiation of organ systems established in the embryonic period. In particular, the brain continues to grow and develop, the respiratory system differentiates, the urogenital system further differentiates between male/female, endocrine and gastrointestinal tract begins to function.

Compare this 10 week fetus with the earlier Carnegie stage embryos: size, head/body proportions, brain, head, skeletal development. Note that in the early fetus the midgut remains herniated and will only be taken into the peritoneal cavity on further body wall growth.


Fetal Links: fetal | Week 10 | Week 12 | second trimester | third trimester | fetal neural | Fetal Blood Sampling | birth weight | Developmental Origins of Health and Disease | fetal growth restriction | macrosomia | BGD Practical | Medicine Lecture | Science Lecture | Lecture Movie | preterm birth | birth | Category:Human Fetus | Category:Fetal
Historic Embryology  
1940 Fetus Physiology
Carnegie Fetal: 95 | 96 | 142 | 145 | 184 | 211 | 217 | 300 | 362 | 448 | 449 | 538 | 590 | 607 | 625 | 662 | 693 | 847 | 858 | 922 | 928 | 948 | 972 | 1318 | 1388 | 1455 | 1591 | 1597b | 1656 | 1686 | 2250a | 2250b | 3990 | 5652 | 6581 | 7218



Human week 10 fetus 02.jpg

Human Fetus female midline image (plane D, H&E stain). See also Large Image Version

Note - the midgut herniation still present, pelvic urogenital development, palate development.


Related Images

Human- fetal week 10 planes icon.jpg

Fetus (week 10) Planes A (most lateral), B (lateral), C (medial) and D (midline) from lateral towards the midline.

Image Source: UNSW Embryology, no reproduction without permission.


10 Week 40mm Fetus

There are 4 sections taken in the sagittal plane (moving from the right at Plane A towards the midline at Plane D). Click on the small images (or the text below) to open the linked large image pages.

Human- fetal week 10 sagittal plane A.jpg Human- fetal week 10 sagittal plane B.jpg
Plane A (midline) Plane B (medial)
Human- fetal week 10 sagittal plane C.jpg Human- fetal week 10 sagittal plane D.jpg
Plane C (lateral) Plane D (most lateral)

10 Week Fetal Head

Human- fetal week 10 head A.jpg Human- fetal week 10 head B.jpg
Plane A (midline) Plane B (medial)
Human- fetal week 10 head C.jpg Human- fetal week 10 head D.jpg
Plane C (lateral) Plane D (most lateral)

10 Week Fetal Cerebellum

Human- fetal week 10 cerebellum A.jpg Human- fetal week 10 cerebellum B.jpg
Plane A (midline) Plane B (medial)
Human- fetal week 10 cerebellum C.jpg Human- fetal week 10 cerebellum D.jpg
Plane C (lateral) Plane D (most lateral)


Links: Cerebellum Development | Neural System Development

10 Week Fetal Urogenital

Human- fetal week 10 urogenital A.jpg Human- fetal week 10 urogenital B.jpg
Plane A (midline) Plane B (medial)
Human- fetal week 10 urogenital C.jpg Human- fetal week 10 urogenital D.jpg
Plane C (lateral) Plane D (most lateral)
Fetal 10wk urogenital 1.jpg Fetal 10wk urogenital 2.jpg
Plane A (midline) Plane B (medial)
Fetal 10wk urogenital 3.jpg Fetal 10wk urogenital 4.jpg
Plane C (lateral) Plane D (most lateral)

Human week 10 fetus 03.jpg


Links: Renal System Development | Genital - Female

Additional Images

Historic Images


References

Reviews

Articles

Molina W, Reyes E, Joshi N, Barrios A & Hernandez L. (2010). Maturation of the neuromuscular junction in masseters of human fetus. Rom J Morphol Embryol , 51, 537-41. PMID: 20809033

Chen CP, Tzen CY, Chern SR, Tsai FJ, Hsu CY, Lee CC, Lee MS, Pan CW & Wang W. (2009). A 12 Mb deletion of 6p24.1-->pter in an 18-gestational-week fetus with orofacial clefting, the Dandy-Walker malformation and bilateral multicystic kidneys. Eur J Med Genet , 52, 59-61. PMID: 19049908 DOI.

Wilkin H, Tuohy J & Theewis W. (2000). Prenatal diagnosis of fragile X and Turner mosaicism in a 12-week fetus. Prenat. Diagn. , 20, 854-5. PMID: 11038471

Robb A, Forsyth L & Tolmie J. (1987). Partial trisomy 17q and a generalised bone dysplasia in a 12 week fetus. J. Med. Genet. , 24, 502-4. PMID: 3656375

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Note: Week 10 post-fertilization age (used throughout this current website) is Week 12 gestational age (LMP). Searches for clinical Week 12 gestational age will match this post-fertilization age.

Search PubMed Now: week 10 fetus | week 12 fetus

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Cite this page: Hill, M.A. (2019, March 26) Embryology Fetal Development - 10 Weeks. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Fetal_Development_-_10_Weeks

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G