Template talk:Carnegie stage table

Somites

Human Carnegie Stage Somite Number

Stage	Days (approx)	Size (mm)	Images (not to scale)	Somite Number
9	19 - 21	1.5 - 2.5		1 - 3
10	22 - 23 (week 4)	2 - 3.5		4 - 12
11	23 - 26	2.5 - 4.5		13 - 20
12	26 - 30	3 - 5		21 - 29
13	28 - 32 (week 5)	4 - 6		30
14	31 - 35	5 - 7		30+
Links: somitogenesis

Table versions

Week:	1	2	3	4	5	6	7	8
Carnegie stage:	1 2 3 4	5 6	7 8 9	10 11 12 13	14 15	16 17	18 19	20 21 22 23

Week 1	Week 2	Week 3	Week 4	Week 5	Week 6	Week 7	Week 8
1 2 3 4	5 6	7 8 9	10 11 12 13	14 15	16 17	18 19	20 21 22 23

Carnegie Stage Table

Stage	Days (approx)	Size (mm)	Images (not to scale)	Events
7	15 - 17 (week 3)	0.4		gastrulation, notochordal process
8	17 - 19	1.0 - 1.5		primitive pit, notochordal canal
9	19 - 21	1.5 - 2.5		Somitogenesis Somite Number 1 - 3 neural folds, cardiac primordium, head fold
10	22 - 23 (week 4)	2 - 3.5		Somite Number 4 - 12 neural fold fuses
11	23 - 26	2.5 - 4.5		Somite Number 13 - 20 rostral neuropore closes
12	26 - 30	3 - 5		Somite Number 21 - 29 caudal neuropore closes
13	28 - 32 (week 5)	4 - 6		Somite Number 30 leg buds, lens placode, pharyngeal arches
Stage 13/14 shown in serial embryo sections series of Embryology Program