Reporting by Aadi
During Science Week, biology teacher Mr Merrett demonstrated a dissection to the Year 7 scholars.
He dissected a rat with care and precision, showing us how to use a wax tray and pins to fix the specimen and a sharp scalpel to make incisions. Indicating exactly where to cut, Mr Merrett removed the skin, underlying tissue and the ribcage to reveal the inner organs.
The year seven scholars were then able to look at the breathing system. The students could see the diaphragm and appreciate its role in inhalation.
“This dissection is great because physiologically rats are not too dissimilar from humans, as both species are mammals,” said Mr Merrett. “We get to investigate all the same organs, which have the same functions and adaptations albeit on a smaller scale and in slightly different arrangement.”
He concluded by telling us how the rat is bred for dissection and what sort of chemicals are used to preserve it.
Some of the scholars were bold enough to handle the internal organs, including the lungs, and though they found it “quite gross” they enjoyed the experience. Everyone left feeling they had learnt something new and interesting.
“This dissection was pretty cool, however, quite gory,” said Chloe.
