One of these subsequent events is organogensis, which gastrulation makes possible by allowing the different germ layers to differentiate into major body tissues and form functioning organs. The germ layers that are established during gastrulation are the endoderm, mesoderm, and ectoderm.
Eilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.The island is dominated by its famous picturesque castle.ilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.
Founder. [[:Category:{{{Images}}}|Images]]. Pyke is the stronghold and seat of House Greyjoy, located on the island of the same name, which is one of the seven major Iron Islands. The castle is the regional capital of the Iron Islands as a whole.Pyke is an ancient stronghold and the cliff it was built on has been eroded by the sea leaving the towers standing on stone stacks.The towers are connected by swaying rope bridges.otable residents of the castle Edit. 1  King Balon Greyjoy, King of the Iron Islands, Lord Reaper of Pyke. 2  Princess Yara Greyjoy, his only daughter. 3  Victarion Greyjoy, Balon's brother, Captain of the Iron Fleet.