What does a fetus look like at 6 weeks? Or 8 weeks? Or 16 weeks?

In embryology, Carnegie stages are a standardized system of 23 stages used to provide a unified developmental chronology of the vertebrate embryo.

Many times, anti-choice propaganda displays inaccurate images and information. At 6 weeks (Carnegie stage 16,17), a fetus does not have a heart. The so-called “fetal heartbeat” bills are based upon involuntary reflexes of cardiac cells.

Color Optical Photos of Human Embryo Carnegie Stages.
Credit: Brad Smith, Stamps School of Art & Design, University of Michigan.

See the Carnegie stages here.