Embryology and Development — Flashcards

If the developing embryo splits in the 2-cell stage (0-4 days), the twins will be _____ and diamniotic (# of chorions and # of amniotic sacs)

_____ part of the tongue (body) is derived from the mesoderm of the 2nd, 3rd, and part of the 4th arch

The allantois becomes the _____, which is a duct between the fetal bladder and the umbilicus

The urogenital ridge has 2 parts, the _____ and the nephrogenic cord

The formation of the _____ from the epiblast is the indicator that gastrulation has started.

Pinna (auricle) develops from _____ mesenchymal proliferations in 1st and 2nd branchial arches.

Y-shaped sutures are formed from the _____, infantile and adult nucleus of the lens

The _____ (left) and proximal part of the right subclavian artery (right) are derivatives of the 4th aortic arch

_____ part of the tongue and the epiglottis is derived from the third swelling in the posterior part of the 4th arch

The _____ artery is a derivative of the 1st aortic arch