Label The 48-hour chick embryo 56 B. At the level of the telencephalon. Identify the somite, amniotic cavity, dorsal aortae, chorion, precardinal vein, third pharyngeal pouch, pharynx, endocardium and myocardium of bulbus cordis, nasal placode, third closing plate, third aortic arch, aortic sac and telencephalon. C. At the level of the heart. Identify the spinal cord, dermatome, myotome, sclerotome, atrium, ventricle, pericardial cavity, bulbus cordis, amnion, amniotic cavity, descending aorta, common cardinal vein, splanchnic mesoderm Identify the numbered structures:




