Carnegie Stage 16

Introduction

Stage 16 embryos have a greatest length of 8 to 11 mm and an estimated postfertilization age of 39 days. The retinal pigment is distinct and the foot plate has formed. The stage is represented by Carnegie embryo #6517. It has a greatest length of 10.5 mm (after fixation) and is considered to be in the most advanced third of the stage.

New structures include brachial artery, intercostal nerves, nasal sac, neural arches, radial nerve, spleen, splenic artery.

Also on EHD: Central Nervous System

Whole Body

Left lateral view of the embryo prior to sectioning