The Carnegie stage 22 Human Embryo is 27mm in size and approximately equal to day 54 - 56 of development. Levels indicated on images are only approximate. By clicking on the section you can sequentially step through the images or go to the unlabelled or tutorial figures. There is also a high power set of selected stage 22 images showing details of specific structures.
Hint: clicking on each section image above will also step you through the whole embryo in sequence.