How to identify the 4 major blood vessels in the dissection of alimentary canal of a rat

1
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
To identify the blood vessels, you can perform
some important steps first as follows.
Liver
Spleen
ileum
caecum
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Main steps to identify the 4 blood vessels
Step 1 Step 6 Step 2 Step 7 Step 3 Step
8 Step 4 Step 9 Step 5 Step 10
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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
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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
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THANK YOU !
LEUNG KWOK KWONG HK KLN CCPA MA CHUNG SUM
SECONDARY SCHOOL