Ooo... a post about dissections... now this is my kinda topic! :hugegrin:
I've done quite a number of dissections, strangely, I've never dissected the same organism more than once. Which all things considering, is actually fairly unique.
First dissection was either grade 6 or 7 (I was in the same classroom for both, so I can't remember which year). It was a spider, not a tiny one, but not a large one either. Mostly looking at how the joints of the exoskeleton worked to compare it to what we knew of our own joints. It was simplistic, but fun.
Grade 10 science I had three dissections, earthworm, locust, and crayfish. I enjoyed the earthworm and locust more so than the crayfish, simply because the latter was essentially like opening up a small lobster. It didn't feel that special. Plus it was absolutely annoying to break into. The earthworm had been so simple to slice into and examine the digestive and circulatory systems, and the locust was amusingly squishy. :lol: I took Grade 11 biology the same year, and there we dissected a perch, a squid, and a rat. Again, the fish was fairly boring for me (I'd seen relatives clean and fillet fish). The squid was fascinating, but my group's specimen hadn't been preserved all that well, so it wasn't spectacular. The rat was a different story. My group had got dibs on the rat of our choice, and we asked for the pregnant female. Well, our teacher assumed the extremely plump rat was the pregnant female. However, I discovered during the pelvic dissection that not only was our rat not pregnant, it wasn't female. It however was extremely well preserved. Curiously, I'm wondering if one of the posters from 2005 might have been in my bio class, as the teacher instructed the class to attempt to get to the brain - and one student smashed their way through, much to the surprise of the teacher :guffaw:
When I took physics in grade 11, I too dissected the cow eye. It really is beautiful inside. And unlike some of my classmates, I knew to stand away from the dissection... a few people got a mouthful. Yum. :guffaw:
My OAC (grade 13... it no longer exists, I was the second last year in Ontario to have OAC) bio I took during my grade 12 year. We didn't do any complete dissections, just organs. One was a sheep's heart, and the other was the sheep's brain. The heart was nice, but by that point in biology, we'd covered texts of the heart and circulatory system so many times that it was pretty well like looking at a model. The brain was what I was giddy over. I loved being able to look at the internal structures of the brain, to see how circulation was set up considering the blood-brain barrier. The differences in the texture and appearance of the various structures. It was stunning. But I've always been a neurology-geek.
That same year I was also doing a co-op placement at the local hospital. The head nurse on the post-surgical ward I was in liked me a LOT. I got to engage in a lot of things that I was BEYOND lucky to be permitted to experience. One afternoon I got to assist in rotating and holding a patient still while an epidural was put in place. However, that was nothing compared to the fact the nurse arranged with a surgeon for me to be able to scrub in to observe three operations. I got to stand only a couple feet away while the surgeon performed a nose job, a carpel tunnel surgery, and the removal of hardware and stabilization of tendons in the hand to the middle and ring finger. It was absolutely amazing. :adore:
In university, I did dozens of dissections. Sea urchin, mud puppy, shark, pigeon, fetal pig, mouse, frog, more organs, and cockroaches. I won't go into detail about all of them... just the fun/creepy points.
Fetal Pig - When preparing a specimen for dissection, they often inject blue and red dye into the veins and arteries in order to make them more visible. Well lucky me, I got a specimen where they decided to set the dial to 11... the insides looked like brown goo and entire circulatory system was blown to bits.
Frog - Heh, this one was partly to examine the impact of neuro-electrical impulses on the muscles. So we were actually instructed to dissect our frog's legs, place them into a crouched position, and then attach an electric impulse to their muscle. Jump frog, jump!
Mouse/Organ dissections - These were the hardest ones for me. They were for histological studies, and we had to work with 'fresh' organs. I'd made friends with the mouse before class, before I realized that it was going to be our experiment. I struggled a lot with it because the specimens were still warm when we got them.
Cockroaches - Doing enzymatic studies. For background knowledge, my building had a cockroach problem, so I already was creeped out by them. We had to pin them, still alive, and remove a certain length of their digestive system. I had to get my lab partner to do this one, just touching the cockroach had me squirming... and I STILL have nightmares.
Overall though, I love biology... and loved dissections. I still have all my books and notes and sketches going back to tenth grade science. Even with the couple of really awful ones, I wouldn't trade the other experiences for anything in the world. Well, except maybe a chance to observe a few dozen in depth brain surgeries or intense studies of the impacts of lesions/insult/pressure/etc on various portions of the brain. But again, I'm a neurology-geek.