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Stage 1 / 1 day Stage 2 / 2-3 days Stage 3-1 / 4 days Stage 3-2 / 4-5 days Stage 4 / 6 days Stage 5a-1 / 7 days Stage 5a-2 / 8 days Stage 5b / 9 days Stage 5c / 12 days Stage 6 / 13-17 days Stage 7 / 16-19 days Stage 8 / 23 days Stage 9 / 25 days Stage 10 / 28 days Stage 11 / 29 days Stage 12 / 30 days Stage 13 / 32 days Stage 14 / 33 days Stage 15 / 36 days Stage 16 / 39 days Stage 17 / 41 days Stage 18 / 44 days Stage 19 / 45-47 days Stage 20 / 49 days Stage 21 / 49-52 days Stage 22 / 52-55 days Stage 23 / 56 days

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
close
artifact separation(s), central canal, choroid fissure, choroid plexus, dural band for tentorium cerebelli, endolymphatic sac, falx cerebri region, hypothalamus, junction of internal carotid and posterior communicating arteries, lateral recess of rhombencoel (fourth ventricle), lateral ventricle, myelencephalon (medulla oblongata), pyramidal tract region, region of cervical flexure, spinal tract of trigeminal nerve (CN V), sulcus terminalis, third ventricle
0 μm
Carnegie Embryo #462   |   Location: 4-04-03

Keywords: artifact separation(s), central canal, choroid fissure, choroid plexus, dural band for tentorium cerebelli, endolymphatic sac, falx cerebri region, hypothalamus, junction of internal carotid and posterior communicating arteries, lateral recess of rhombencoel (fourth ventricle), lateral ventricle, myelencephalon (medulla oblongata), pyramidal tract region, region of cervical flexure, spinal tract of trigeminal nerve (CN V), sulcus terminalis, third ventricle

Source: The Virtual Human Embryo.