Study of developement of chick embryo: 48 and 72 hour embryo after incubation.

The 48 hour chick embryo: mesencephalon, rhombenecephalon, fifth cranial nerve, notochord, anterior cardial vein, roots of 7th and 8th cranical nerves, let anterior vitelline membrane,truncus arteriosus, neural tube, omphalomesenteric artery, aorta, diencephalon, infundibulum, preoral gut, rathkes pouch, oral plate, pharynx, right anterior vitelline memebrane, ventricle, right omphalomesentric vein, posterior cardinal vein, mesonephric duct.

The 72 hour chick embryo: tail. posterior appendage bud, anterior appendage bud, atrium, anterior cardinal vien, truncus arteriosus, aortic arch IV, visceral cleft II, ganglion IX, auditory vesicle, hyoid arch, hyomandibular cleft, mandibular arch, metencephalon, ganglion V, lens of eye, sensory layer, pigmented layer, epiphysis, diencephalon, olfactory pit, telencephalon, ventricle, vitelline vein, vitelline artery.