Topic 3---A: Exchange and Transport Systems- 6. Dissecting Gas Exchange Systems

Question 1

Scalpel

Answer 1

• They have a very sharp detatchable blade
• They can be used for making very fine cuts.

Question 2

Dissecting scissors

Answer 2

• Also used for precise cutting
• They are safer to use than scalpels

Question 3

Dissecting pins

Answer 3

• Can be used with a wax-filled dissection tray
• To pin a specimen in place during dissection

Question 4

Tweezers

Answer 4

• Useful for holding and manipulating the smaller parts of the specimen

Question 5

Ethical issues surrounding the dissection of animals

Answer 5

• Some people argue that it is morally wrong to kill animals just for dissections
• There are concerns that the animals used for dissections are not always raised in a humane way