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red
mouth (oral cavity)

orange
pharynx

yellow
esophagus

green
stomach

blue
small intestine

purple
large intestine

red 👅
tongue

orange
salivary glands

yellow
liver

green
gallbladder

blue
pancreas

1

2

3

4

5

6

7

8

9

10
spleen

11
stomach

12
pancreas

13
duodenum

14
Jejunum

15
cecum

16
descending column

17
transverse colon

18
ascending colon

19
Ileum

20
sigmoid colon

21
appendix

22
rectum

23
anal canal

24
anus

red:
Epithelium, Lamina propria(CT), Muscularis mucosae
mucosa

orange:
Contains blood vessels, Submucosal plexus (nervous tissue) lymphatics
submucosa

yellow:
Inner circular layer, Outer longitudinal layer
muscularis externa

green
serosa

blue
myenteric plexus

purple
submucosal plexus

pink
parasympathetic ganglion of myenteric plexus

white
esophageal hiatus

black
diaphragm

red
serosa

orange
longitudinal muscle

yellow
circular muscle

green
submucosa

blue
muscularis mucosae smooth

purple
lamina propria

pink
epithelium

red
mucosa

orange
submucosa

yellow
muscularis externa

green
longitudinal layer

blue
circular layer

purple
serosa

pink
submucosal glands

A
lymphoid nodule

B
villi

C
Epithelium

D
Lamina propria

E
Mucosal gland

F
Muscularis mucosae

G
Lymphatic vessel

H
Myenteric plexus

I
artery and vein

1
mucosal epithelium

2
muscularis mucosae

3
submucosa

4
muscularis externa

5
serosa

6 (tissue type)
stratified epithelium

7
muscularis mucosae

8
submucosa

9
muscularis externa

10
serosa

11
mucus gland

12 (tissue type)
columnar epithelium

13 & 14
gastric pits

15
villi

16 & 19
intestinal crypt

18
columnar epithelium

20
muscularis mucosae

21
submucosa

22
muscularis externa

red
esophagus

orange
stomach

green
Jejunum

blue
colon

red
esopagus

orange
stomach

yellow
small intestine

green
large intestine

blue
mucosa epithelium

purple
circular muscularis epithelium

pink
adventitia

black
mucosa lamina propria

white
serosa

grey
longitudinal muscularis externa