Wednesday, July 18, 2007

Biology...

WE DISSECTED RATS!!!!!!Yup,in Biology lesson today we actually dissected rats.We were divided into 5 groups and each group had their own rat.I was in the same group as Jaya,Lenna,Shona and Siew May.We were all really freaked out.The rats were so cute and we felt so heartless and cruel.Our first instructions were to nail the rat onto the plate thingy it was on.The first image that came to my head was the scene from Passion of Christ and I nearly felt sick.Thank God I didn't!We spent like 5 minutes just holding the hammer and the nail,not wanting to poke holes into the poor rat's tiny paws,but knowing it was something we had to do,we nailed the paws after teacher helped us with the 2 top paws.We cut the skin,then the I have no idea what and finally opened up the whole belly part of the rat.Then,we had to nail the skin to the plate as well to make sure it wouldn't get folded and obstruct the view of the rat's organs.The heart was still pumping and it was so tiny.The small intestine and stomach were the most disgusting looking.Then teacher came to inspect on our rat.She took 2 of the apparatus and started shifting the organs around;from the right side of the rat to the left and back again.Then she showed us the kidneys,which were actually hidden under all the other organs,which explains why she was shifting the organs around.They looked so mushy and soft,wherever the apparatus thing touched the stomach,it would leave a mark like when we poke something into plasticine,except it goes back into shape.Then,we also had to check the gender of a rat.At first,before dissecting the rat,we thought it was a male,since there was the 'thing' there.After dissecting,we found out it was actually a female.We saw the fallopian tubes and ovaries.The ovaries were so extremely tiny.Jaya,Siew May and I had to leave the class earlier to go for prefect's recess.And that was when my teacher said they were going to dissect the head to see the brain!!So unfair!!So we had no choice but be good prefects and go eat and prepare for duty.Jaya and me,being in the same department,breezed through our duty and ran to the lab again.Unfortunately,when we reached the lab,they had already thrown the rats into the dustbin and were washing everything up.Good thing our teacher let us dig through the rubbish to look for the right rat.They only dissected 1 or 2 of the rats in the head,so we had to dig through the gloves and the other rats to look for the 'right rat'.Then after a few minutes of digging,we finally found it!!Hooray..the brain was also very tiny.All in all,it turned out to be a very good experience.I still feel a little bad for having to cut the poor rat open.Eventually,the rat's heart stopped beating.Bye bye rat...=(

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