External: The eyelids, which have been thickening gradually, are now rapidly encroaching upon the eyes. The formation of the auricle has progressed noticeably: the tragus and antitragus especially are assuming a more definite form. The superficial vascular plexus of the head extends upward about three-quarters of the way above the eye-ear level. The hands extend further out in front of the body of the embryo, and the fingers of one hand may overlap those of the other.

• The eyelids, which have been gradually thickening throughout the period covered by these age groups, are now rapidly encroaching upon the eyeballs.
• Noticeable progress has been made in the molding of the external ear.
• The tragus and the antitragus especially are assuming a more definite form.
• The superficial plexus extends upward about three-fourths the way above the ear-eye level.
• The hands extend farther out in front of the body of the embryo, and the fingers of one hand overlap those of the other.
• Ovulation age: 54-56 days

Question: How far does the superficial plexus extend at this stage?

Developmental Stages in Human Embryos by Ronan O'Rahilly and Fabiola Müller.  Published by Carnegie Institution of Washington, Publication 637. 1987. Stage 22 (PDF)

Stage 21

Stage 23