UNSW Embryology

Carnegie Stage 20

© Dr Mark Hill (2008)

Acknowledgements

Carnegie Stage 20 labelled

Carnegie Stage 20(day 51)

Features: scalp vascular plexus, eylid, eye, nose, external acoustic meatus, auricle of external ear, arm, elbow, wrist, liver prominence, digital rays

Additional Information

Limbs: upper limb nerves in an orientation and arrangement similar to those in the adult. Shinohara H, Naora H, Hashimoto R, Hatta T, Tanaka O. Development of the innervation pattern in the upper limb of staged human embryos. Acta Anat (Basel). 1990;138(3):265-9.

Lip and Palate: components of the upper lip, medial nasal prominence and maxillary process completely merged. Yoon H, Chung IS, Seol EY, Park BY, Park HW. Development of the lip and palate in staged human embryos and early fetuses. Yonsei Med J. 2000 Aug;41(4):477-84.

Carnegie Stage 20

Carnegie Stages 21

Stage 21 Unlabelled | Stage 21 Labelled

Glossary of Terms

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

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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