UNSW Embryology

Carnegie Stage 18

© Dr Mark Hill (2008)

Acknowledgements

	Carnegie Stage 18 Facts: Week 7, 44 - 48 days, 13 - 17 mm View: Lateral view. Amniotic membrane removed. Features: Identify: pigmented eye, eyelid, nasolacrimal groove, external acoustic meatus, heart, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord Labelled Stage 18

Events

Ectoderm: sensory placodes, lens pit, otocyst,nasal pits moved ventrally, fourth ventricle of brain

Mesoderm: heart prominence

Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, eye, auricular hillocks

Body: heart, liver, umbilical cord

Limb: upper and lower limb buds, foot plate, wrist, hand plate with digital rays

Next - Carnegie Stages 19

Stage 19 Unlabelled | Stage 19 Labelled

Glossary of Terms

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Carnegie Stage images

The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota for tutorial/revision purposes and cannot be reproduced electronically or in writing without permission.

UNSW Embryology ISBN: 978 0 7334 2609 4

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