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Atlas of Human Embryos Chapter   Figure

C-7 spinal ganglion, alar plate(s), basal plate, brachial plexus, cranial edge of liver, esophageal condensation, floor plate, interventricular groove, interventricular septum (muscular portion), junction of dorsal aortas, left common cardinal vein, left horn of sinus venosus, left primary bronchus, left ventricle, marginal vein, median nerve, mesocardium (caudal part), notochord, pericardial cavity, peritoneal cavity, phrenic nerve, placode on upper limb bud, pleuropericardial membrane, postcardinal vein, primitive pleural cavity, radial nerve, right horn of sinus venosus, right ventricle, roof plate, septum transversum, sinus venosus (transverse portion), ulnar nerve, upper lobar bud

A section through the C-7 spinal ganglion and left sinus horn.

Observe:
1. Three large brachial plexus nerves innervating the upper limb bud.
2. The junction of the dorsal aortas into a common midline vessel.
3. The junction of the left common cardinal vein with the left sinus horn.
4. The edge of the liver separated from the pericardial cavity by the septum transversum.
5. The muscular portion of the interventricular septum separating the ventricles.


Keywords: C-7 spinal ganglion, alar plate(s), basal plate, brachial plexus, cranial edge of liver, esophageal condensation, floor plate, interventricular groove, interventricular septum (muscular portion), junction of dorsal aortas, left common cardinal vein, left horn of sinus venosus, left primary bronchus, left ventricle, marginal vein, median nerve, mesocardium (caudal part), notochord, pericardial cavity, peritoneal cavity, phrenic nerve, placode on upper limb bud, pleuropericardial membrane, postcardinal vein, primitive pleural cavity, radial nerve, right horn of sinus venosus, right ventricle, roof plate, septum transversum, sinus venosus (transverse portion), ulnar nerve, upper lobar bud

Source: Atlas of Human Embryos.