Mouse: day 11

On this page stained cross sections of 11-days old embryos of the mouse (Mus musculus) are shown.
 

Embryology of the mouse - cross sections day 11
Recommendation to study these views together with the textbook: Atlas of descriptive embryology. Gary C. Schoenwolf. Pearson, Benjamin Cummings eds. ISBN 978-0-13-158560-7
Section at the level of the brain
1 = Metocoel in metencephalon 2 = Diocoel in diencephalon 3 = Lateral ventricle telencephalon 4 = Beginning of regio infundibulum (Rathke's pouch)
Section at the level of the heart region
1 = Spine 2 = Endolymphatic channel 3 = Diocoel of the diencephalon 4 = Eye bud 5 = Telocoel lateral ventricle of telencephalon
Section at the level of the heart region
1 = Spine 2 = Spinal ganglion 3 = Chorda 4 = Pharynx 5 = Forelimb bud 6 = Lung bud 7 = Left atrium 8 = Left ventricle 9 = Pericardial cavity 10 = Right ventricle 11 = Right atrium 12 = Anterior cardinale vein 13 = Dorsal aorta
Section at the level of the heart region (continued)
Due to the bending of the head close to the section of the heartregion another section through the muzzle is visible as well.   1 = Spine 2 = Spinal ganglia 3 = Heart region 4 = Pharynx 5 = Trachea 6 = Anterior cardinal vein 7 = Aorta 8 = Nose region with olfactory grooves
Section at the level of the heart (continued), liver and lung buds)
1 = Spine 2 = Pleural cavity 3 = Lung bud 4 = Posterior vena cava 5 = Liver 6 = Peritoneal cavity 7 = Tail
Source: mouseatlas.org