Embryology and Development — Flashcards

_____ is the abnormal opening of the penile urethra on the ventral surface of the penis due to failure of urethral folds to fuse

From the umbilical vein, blood is conducted into the _____ via the ductus venosus, which bypasses hepatic circulation

The _____ artery and hyoid artery are derivatives of the 2nd aortic arch

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)

Two common first arch syndromes are _____ syndrome and pierre robin sequence

The _____ duct connects the yolk sac to the midgut lumen

The _____ part of the left anterior cardinal vein and the transverse anastomosis becomes the left brachiocephalic vein

Each otic vesicle divides into a dorsal component called _____ and a ventral component called pars inferior.

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

In _____ ossification, osteoblasts and osteoclasts replace cartilage with a matrix of woven bone and then remodel to lamellar bone.