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Carnegie Stage Section
T-1 / T-2 intervertebral disc, T-1 intercostal nerve, T-1 spinal ganglion, T-2 intercostal nerve, T-2 spinal ganglion, axillary artery, brachial plexus, interventricular foramen, left atrium, left ventricle, muscular part of interventricular septum, phrenic nerve, rib 2, rib 3, rib 4, right atrium, right precardinal vein, right pulmonary artery, right vagus nerve (CN X), right ventricle, subarachnoid space, sulcus limitans, undivided truncus arteriosus (proximal outflow tract)
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Carnegie Embryo #4430   |   Location: 17-21

Keywords: T-1 / T-2 intervertebral disc, T-1 intercostal nerve, T-1 spinal ganglion, T-2 intercostal nerve, T-2 spinal ganglion, axillary artery, brachial plexus, interventricular foramen, left atrium, left ventricle, muscular part of interventricular septum, phrenic nerve, rib 2, rib 3, rib 4, right atrium, right precardinal vein, right pulmonary artery, right vagus nerve (CN X), right ventricle, subarachnoid space, sulcus limitans, undivided truncus arteriosus (proximal outflow tract)

Source: The Virtual Human Embryo.