1. @ Copyright
How to identify the 4 major blood vessels in the dissection of alimentary canal of a rat ?
LEUNG KWOK KWONG
HK & KLN CCPA MA CHUNG SUM SECONDARY SCHOOL

2. @ Copyright
To identify the blood vessels, you can perform some important steps first as follows.
Liver
Spleen
ileum
caecum

3. Step 1 Step 6 Step 2 Step 7 Step 3 Step 8 Step 4 Step 9 Step 5 Step 10
Main steps to identify the 4 blood vessels
Step Step 6
Step 2 Step 7
Step 3 Step 8
Step Step 9
Step Step 10

4. Move stomach on the right hand side of a rat
Step 1
To cut mesentry connected between liver and stomach
Move stomach on the right hand side of a rat

5. Step 2
Stomach
pancreas
Put caecum on the right foot of a rat

6. Step 3
You can find that Ileum is crossing the colon here.
Ileum
colon
To release the loop between ileum & colon

7. Step 4
Pink color pancreas is clearly found

8. Step 5
To peel off some pancreas.
To show hepatic portal vein connecting from ileum to liver

9. Step 6
Trace the duodenum & ileum as a fan-like pattern

10. Step 7
Hepatic portal vein
Coeliac artery
Anterior mesenteric artery
To identify the 3 major blood vessels on the position first

11. Step 8
Hepatic portal vein
Coeliac artery
Anterior mesenteric artery
To clear & pin out the 3 major blood vessels

12. Step 9
rectum
Posterior mesenteric artery
To find the posterior mesenteric artery near rectum

13. Step 10
You are now finishing this dissection .
Coeliac artery
Hepatic portal vein
Anterior mesenteric artery
Posterior mesenteric artery

14. HK & KLN CCPA MA CHUNG SUM SECONDARY SCHOOL
THANK YOU !
LEUNG KWOK KWONG
HK & KLN CCPA MA CHUNG SUM SECONDARY SCHOOL