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Atlas of Human Embryos Chapter   Figure
 <   >  search results: atrioventricular canal Search   Fig. 4-6-8 Fig. 5-16-21

C-4 dermatome, C-4 neural crest, atrioventricular canal, atrioventricular sulcus, bulboventricular sulcus, dorsal aorta, left atrium, left common cardinal vein, left horn of sinus venosus, left umbilical vein, ostium primum, pericardial cavity, pericardioperitoneal canal, postcardinal vein, primitive right ventricle, primitive stomach, right atrium, right hepatocardiac vein, right horn of sinus venosus, right umbilical vein, sinus venosus, spleen primordium, trabeculae, upper limb bud

A section through the C-4 neural crest, upper limb bud, primitive stomach and the horns of the sinus venosus.

Observe:
1. The continuity of the conus cordis in Section 20 with the primitive right ventricle of the heart.
2. The communication (atrioventricular canal) between the atria and primitive left ventricle in Section 22.
3. The junction of the right umbilical and hepatocardiac veins with the right sinus horn and the junction of the left common cardinal and umbilical veins with the left sinus horn.
4. The slightly enlarged portion of the foregut that forms the primitive stomach.
5. The trabeculae of the primitive left ventricle.


Keywords: C-4 dermatome, C-4 neural crest, atrioventricular canal, atrioventricular sulcus, bulboventricular sulcus, dorsal aorta, left atrium, left common cardinal vein, left horn of sinus venosus, left umbilical vein, ostium primum, pericardial cavity, pericardioperitoneal canal, postcardinal vein, primitive right ventricle, primitive stomach, right atrium, right hepatocardiac vein, right horn of sinus venosus, right umbilical vein, sinus venosus, spleen primordium, trabeculae, upper limb bud

Source: Atlas of Human Embryos.