In early embryogenesis of most eutherian mammals the inner cell mass (abbreviated ICM and also known as the embryoblast or pluriblast the latter term being applicable to all mammals) is […]
List of articles in "Anatomical Structure" category - Page 240
Alar plate
The alar plate (or alar lamina) is a neural structure in the embryonic nervous system part of the dorsal side of neural tube that involves the communication of general somatic […]
Valve of coronary sinus
The valve of the coronary sinus (Thebesian valve) is a semicircular fold of the lining membrane of the right atrium at the orifice of the coronary sinus. It is situated […]
Posterior vein of the left ventricle
The posterior vein of the left ventricle runs on the diaphragmatic surface of the left ventricle to the coronary sinus but may end in the great cardiac vein.
Oblique vein of the left atrium
The Oblique Vein of the Left Atrium (oblique vein of Marshall) is a small vessel which descends obliquely on the back of the left atrium and ends in the coronary […]
Blood island of umbilical vesicle
Blood islands are structures in the developing embryo which lead to many different parts of the circulatory system.They primarily derive from plexuses formed from angioblasts. Within them vacuoles appear through […]
Common cardinal veins
During development of the veins the first indication of a parietal system consists in the appearance of two short transverse veins the ducts of Cuvier (or common cardinal veins) which […]
Anterior cardinal vein
The anterior cardinal veins (precardinal veins) contribute to the formation of the internal jugular veins and together with the common cardinal vein form the superior vena cava. In an anastomosis […]
Second pharyngeal arch
The second pharyngeal arch or hyoid arch (or second branchial arch) assists in forming the side and front of the neck.
Body-stalk
The body-stalk is a band of mesoderm that first connect the caudal end of the embryo to the chorionWith the formation of the caudal fold the body-stalk assumes a ventral […]