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Carnegie Stage Section

Abbreviation Key

a
artery
aa
arteries
ant
anterior
a-v
atrio-ventricular
C
Cervical
Co
Coccygeal
CN
Cranial Nerve
D
diencephalic neuromere or diencephalon
dm
dermatomyotome
inf
inferior
int
internal
L
Lumbar
lat
lateral
lt
left
M
mesencephalic neuromere or mesencephalon
med
medial
n
nerve
O
Occipital
P
prosencephalon
post
posterior
prim
primordial
R
rhombencephalon
Rh
rhombomere
rt
right
S
Sacral
T
Thoracic
v
vein
vv
veins
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C-1 spinal nerve, C-1 vertebra (atlas), C-2 spinal ganglion, C-2 ventral root, atlanto-occipital joint, auricle, basi-occipital (basal plate), dens of C-2 vertebra (axis) region, edge of tongue, facial nerve (CN VII), falx cerebri region, head mesenchyme, hippocampal thickening, interventricular foramen, lateral ventricle, nasopharynx, notochord, optic chiasma (chiasmatic plate), optic groove, optic stalk (CN II), optic ventricle, oropharynx, paraphysis, spinal accessory nerve (CN XI), stem of adenohypophysis, subarachnoid space, third ventricle, vertebral artery
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Carnegie Embryo #4430   |   Location: 12-6

Keywords: C-1 spinal nerve, C-1 vertebra (atlas), C-2 spinal ganglion, C-2 ventral root, atlanto-occipital joint, auricle, basi-occipital (basal plate), dens of C-2 vertebra (axis) region, edge of tongue, facial nerve (CN VII), falx cerebri region, head mesenchyme, hippocampal thickening, interventricular foramen, lateral ventricle, nasopharynx, notochord, optic chiasma (chiasmatic plate), optic groove, optic stalk (CN II), optic ventricle, oropharynx, paraphysis, spinal accessory nerve (CN XI), stem of adenohypophysis, subarachnoid space, third ventricle, vertebral artery

Source: The Virtual Human Embryo.