UNSW Embryology

Carnegie Stage 23

© Dr Mark Hill (2009)

Acknowledgements

	Carnegie Stage 23 (day 56) Facts: Week 8, 56 - 60 days, 27 - 31 mm View: Lateral view. Amniotic membrane removed. Features: scalp vascular plexus, eylid, eye, nose, auricle of external ear, mouth, sholder, arm, elbow, wrist, toes separated, sole of foot, umbilical cord Labelled Stage 23

Events

Ectoderm:

Mesoderm: ossification continues

Head: eyelids, external ears, rounded head

Body: straightening of trunk, intestines herniated at umbilicus

Limbs: hands and feet turned inward

Next

This is the final Embryonic Stage, next look at the early Fetus (growth and musckuloskeletal and organ development) - Early Fetal (week 10)

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

UNSW CRICOS Provider Code No. 00098G