something about all parts of dissecting set answer please fast
Answers
Anatomy is one of the oldest branches of science. Since ancient Egypt, humans have been dissecting their deceased to understand how the human body works and what happens during the pathology of disease. Today, dissections, or the act of cutting open dead organisms to study their parts, still play a role in science and medicine.
Dissections allow us to see the working parts of the body. They can help us understand the structure of our organs and how they relate to their function. When studying anatomy, one of the most important aspects is to actually see the inside of organisms. Many students dissect a frog, cat or pig during this part of their unit on anatomy, but students can also dissect plants or fungi.
Tools
1. Safety Equipment
Before we can actually use any tools in a dissection, we need to take some precautions. Dissection specimens are usually preserved in a toxic chemical called formaldehyde, which can cause cancer. In addition, dead organisms, even if they are preserved, can carry disease. Always wear gloves, a lab coat and goggles when dissecting any organism.
2. Dissection Tray
Just as you protect your body, you need to protect the space you're working in, too. All dissections should be done in a dissection tray. The dissection tray has a metal bottom filled with a plastic insert. The plastic insert is thick and somewhat soft to provide support for pinning the specimen in place. Most plastic inserts can be removed to thoroughly clean the tray when you're finished.
3. Scalpel
Once it's time to open up your rat, you're going to need a scalpel. Scalpels are small razor blades attached to a metal or plastic handle. They are useful when you need to make an incision into a sealed part of the body, for example the initial cut into the skin of the rat. When first opening up the chest cavity, a scalpel can be very helpful for cutting through the skin and muscle.
4. Scissors
After there is an initial incision, you can use dissection scissors to cut open the muscle and expose the internal organs. Scissors are also helpful when removing internal organs. In order to see organs in the back of the rat, such as the kidneys, the intestines will need to be removed. A few snips from the scissors can cut connective tissue and allow you to set the intestines aside to examine other structures in the back of the abdominal cavity.
For small animals, such as a rat, scissors can also be used to cut open bone. In order to examine the brain, the skull needs to be cut open. Scissors act like a saw for the thin bone of a rat and easily expose the brain below.
5. Forceps
While cutting with the scalpel and scissors, you're going to want to grab small pieces of tissue or organs. Using our gloved hands to handle such small organs in the rat would be clumsy and unhelpful. Forceps are like larger tweezers and can be used as a set of hands during the dissection. Forceps can be used to pull back tissue, remove organs and hold parts of the body in place.
6. Needle
A needle is a fine-pointed tool that can be used to hold the specimen in place as you dissect and study the internal structures. With a sharp point, it can also be used to tease apart tissue and pull back organs. The needle can double as a pointer when trying to point out structures to your classmates as well.