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Carnegie Stage Section
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C-7 / T-1 intervertebral disc, C-8 spinal ganglion, C-8 spinal nerve, aorticopulmonary septum region, blastemata of extensor muscles in forearm, edge of left atrium, edge of pleural cavity, glenohumeral joint, interventricular sulcus, left atrium, left ventricle, lower trunk of brachial plexus (C-8, T-1), middle trunk of brachial plexus (C-7), pericardial cavity, rib 1, right atrium, right precardinal vein, right pulmonary artery, right ventricle, sympathetic trunk, upper trunk of brachial plexus (C-5, C-6)
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Carnegie Embryo #4430   |   Location: 17-9

Keywords: C-7 / T-1 intervertebral disc, C-8 spinal ganglion, C-8 spinal nerve, aorticopulmonary septum region, blastemata of extensor muscles in forearm, edge of left atrium, edge of pleural cavity, glenohumeral joint, interventricular sulcus, left atrium, left ventricle, lower trunk of brachial plexus (C-8, T-1), middle trunk of brachial plexus (C-7), pericardial cavity, rib 1, right atrium, right precardinal vein, right pulmonary artery, right ventricle, sympathetic trunk, upper trunk of brachial plexus (C-5, C-6)

Source: The Virtual Human Embryo.