Cardiovascular system Back

Formation of the atrial septa





1. Endocardial cushions
2. Left atrium
3. Myocardial ventricular wall
4. Right atrium
5. Septum primum
6. Septum secundum
Technique: Paraffin section
Staining: Hematoxylin-eosin
Orientation: Transverse section
Developmental age: 8 weeks
Magnification (objective): x10