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Carnegie Stage Section
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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
close
accessory nerve (CN XI), anterior semicircular duct, basilar artery, cerebral vesicle (hemisphere), common crus, edge of interventricular foramen, facial nerve (CN VII), glossopharyngeal nerve (CN IX), lateral ventricle, lateral ventricular eminence (telencephalon), posterior communicating artery, posterior semicircular duct, third ventricle, vagus nerve (CN X), vestibulocochlear nerve (CN VIII)
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Carnegie Embryo #4090   |   Location: 7-11

Keywords: accessory nerve (CN XI), anterior semicircular duct, basilar artery, cerebral vesicle (hemisphere), common crus, edge of interventricular foramen, facial nerve (CN VII), glossopharyngeal nerve (CN IX), lateral ventricle, lateral ventricular eminence (telencephalon), posterior communicating artery, posterior semicircular duct, third ventricle, vagus nerve (CN X), vestibulocochlear nerve (CN VIII)

Source: The Virtual Human Embryo.