 |
| Previous Image | Next Image |
| Description: On days 18 and 19, the heart begins to develop in the head end of the embryo. It begins in a region of mesodermal cells called the cardiogenic area. A pair of endocardial tubes forms. The tubes fuse to form a primitive heart tube. Picture Stats: Views: 196 Filesize: 1.01MB Height: 907 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=40510 |