![](/drem/stage21/labels2/S217L.gif)
![T-1 spinal ganglion, arch of aorta, auricle of right atrium, axillary nerve, brachioradialis muscle, cephalic edge of auricle of left atrium, esophagus endoderm, grey matter, hamate, head of rib 2, hemisternum, inferior cervical sympathetic ganglion, metacarpal 3, metacarpal 5, middle phalynx of digit 4 (ring finger), pericardial cavity, radius, rib 2, rib 3, rib 4, rib 5, superior vena cava, ulna, white matter](/drem/stage21/Z0/S217N.jpg)
![](/drem/rulerbg.png)
0 μm
Carnegie Embryo #4090 | Location: 14-13
Keywords: T-1 spinal ganglion, arch of aorta, auricle of right atrium, axillary nerve, brachioradialis muscle, cephalic edge of auricle of left atrium, esophagus endoderm, grey matter, hamate, head of rib 2, hemisternum, inferior cervical sympathetic ganglion, metacarpal 3, metacarpal 5, middle phalynx of digit 4 (ring finger), pericardial cavity, radius, rib 2, rib 3, rib 4, rib 5, superior vena cava, ulna, white matter
Source: The Virtual Human Embryo.