Carnegie Stage 22 Definition

Age is approximately 54 postovulatory days

Length is approximately 25-27mm (middle range)

External Features Include: the hands extend further in front of the body and the fingers of one hand may overlap those of the other. The superficial vascular plexus of the head extends upward to form a line at approximately 3/4 of the way above the eye-ear level.


(O'Rahilly R and Muller F [1987] Developmental Stages in Human Embryos. Carnegie Institute, Washington, Publication no. 637)