File:Human week 10 fetus 11.jpg

From Embryology

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Human Female Fetus - Sacrum (10 week)

Large image version of plane D, close to midline (Stain - Haematoxylin Eosin). 0.3 mm scale bar

Axial Skeleton Development

Sacral vertebra (S1–S5) and coccyx (last 4 vertebra) both shown unfused and as cartilage, formed from sclerotome of somites 31 to 44. The cartilage will later ossify in the fetal period. The vertebra will later fuse postnatally from adolescence to the adult (18 - 30 years).

Note the remnant of the notochord present in the vertebral body.


Neural Development

Spinal cord (medulla spinalis), conus medullaris, dura mater, film terminale. Spinal cord has developed from the neural tube.

  • conus medullaris - (Latin, "medullary cone") is the tapered lower end of the spinal cord.


Gastrointestinal Development

Rectum lies anterior to the vertebra and has developed from the hindgut. Note the differentiated epithelial wall of the rectum.


  • Human Female Fetus (week 10)
  • Sagittal Section (plane D)

    Sagittal Section (plane D)

  • Pituitary and Lamina Terminalis

    Pituitary and Lamina Terminalis

  • Olfactory Nerve

    Olfactory Nerve

  • Atlas and Axis

    Atlas and Axis

  • Sacrum

    Sacrum

  • Oral Cavity

    Oral Cavity

  • Epiglottis

    Epiglottis

  • Heart

    Heart

  • Spleen

    Spleen

  • Midgut Herniation

    Midgut Herniation

  • Midgut Herniation (label)

    Midgut Herniation (label)

  • Pelvic Region

    Pelvic Region

  • Pelvic Region (label)

    Pelvic Region (label)


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.


Cite this page: Hill, M.A. (2024, April 27) Embryology Human week 10 fetus 11.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Human_week_10_fetus_11.jpg

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

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