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![Page 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/1.jpg)
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
![Page 2: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/2.jpg)
To identify the blood vessels, you can perform some important steps first as follows.
Liver
Spleen
caecumileum
![Page 3: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/3.jpg)
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
![Page 4: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/4.jpg)
Step 1
Move stomach on the right hand side of a rat
To cut mesentry connected between liver and stomach
![Page 5: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/5.jpg)
Step 2
Put caecum on the right foot of a rat
Stomach pancreas
![Page 6: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/6.jpg)
Step 3
To release the loop between ileum & colon
colon
Ileum
You can find that Ileum is crossing the colon here.
![Page 7: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/7.jpg)
Step 4
Pink color pancreas is clearly found
![Page 8: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/8.jpg)
Step 5
To show hepatic portal vein connecting from ileum to liver
To peel off some pancreas.
![Page 9: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/9.jpg)
Step 6
Trace the duodenum & ileum as a fan-like pattern
![Page 10: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/10.jpg)
Step 7
To identify the 3 major blood vessels on the position first
Coeliac artery
Anterior mesenteric artery
Hepatic portal vein
![Page 11: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/11.jpg)
Step 8
To clear & pin out the 3 major blood vessels
Coeliac artery
Anterior mesenteric artery
Hepatic portal vein
![Page 12: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/12.jpg)
Step 9
To find the posterior mesenteric artery near rectum
rectum
Posterior mesenteric artery
![Page 13: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/13.jpg)
Step 10
Coeliac artery
Anterior mesenteric artery
Hepatic portal vein
Posterior mesenteric artery
You are now finishing this dissection .
![Page 14: @ 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.](https://reader033.fdocuments.in/reader033/viewer/2022052707/5a4d1b4e7f8b9ab0599a6ac4/html5/thumbnails/14.jpg)
THANK YOU !LEUNG KWOK KWONG
HK & KLN CCPA MA CHUNG SUM SECONDARY SCHOOL