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.
Carrickfergus Castle, County Antrim. The mighty stronghold of Carrickfergus, once the centre of Anglo-Norman power in Ulster, is a remarkably complete and well-preserved early medieval castle that has survived intact despite 750 years of continuous military occupation.he mighty stronghold of Carrickfergus, once the centre of Anglo-Norman power in Ulster, is a remarkably complete and well-preserved early medieval castle that has survived intact despite 750 years of continuous military occupation.