What is heart
The animal heart is derived from embryonic mesoderm germ-layer cells that differentiate after gastrulation into mesothelium, endothelium, and myocardium. Mesothelial pericardium forms the outer lining of the heart. The inner lining of the heart, lymphatic and blood vessels develop from endothelium. Myocardium develops into heart muscle.
From splachnopleuric mesoderm tissue, the cardiogenic plate develops cranially and laterally to the neural plate. In the cardiogenic plate, two separate angiogenic cell clusters form on either side of the embryo. Each cell cluster coalesces to form an endocardial tube continuous with a dorsal aorta and a vitteloumbilical vein. As embryonic tissue continues to fold, the two endocardial tubes are pushed into the thoracic cavity and begin to fuse together and are completely fused at approximately 21 days
From Wikipedia, the free encyclopedia
■ links
家具 激安 ムダ毛処理 サントリー健康食品@通販ナビ 育毛剤ランキング 青汁ランキング やずや 千年ケフィア ペニス増大 人間ドック セサミン 効果・効能 自動車保険 ランキング
- 美容整形、美容外科のことなら品川美容外科−美容整形の悩みにお答えします!
- 美容整形のことなら品川美容外科。経験豊富な美容 ... 林寛子さんと新宿院長 杉浦医師との対談が実現!独自の語り口で等身大の『美を語る』彼女が、"今"の美容整形をわかりやすく伝えてくれます。 ... 品川美容外科を代表して４名の医師 ...