File:Human week 10 fetus 09.jpg

From Embryology

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Human Female Fetus - Atlas and Axis (10 week)

Large image version of plane D, close to midline (Stain - Haematoxylin Eosin). 0.5 mm scale bar

Axial Skeleton Development

Note the atlas cervical vertebra (C1) and axis cervical vertebra (C2) specialised vertebra of the axial skeleton to connect the skull to the vertebral column. The atlas arch and the axis odontoid process are shown, with the developing transverse ligament. The developing intervertebral disc lies between the axis and C3.

The vertebral column forms from the sclerotome of somites, each somite pair providing half (left/right) of the vertebral body. The skeleton is still cartilage at this stage and will ossify during the fetal period by endochondral ossification.

Neural Development

Behind the vertebral column the junctional region between brainstem (hindbrain) and spinal cord is shown.

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.

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current23:00, 17 June 2012Thumbnail for version as of 23:00, 17 June 20121,200 × 900 (345 KB)Z8600021 (talk | contribs)==Human Female Fetus Atlas and Axis (10 week)== Large image version of plane D, close to midline (H&E stain). 0.5 mm scale bar Note: {{10wkFetus}}