Dissection

Question 1

Apparatus & Techniques: Dissection
Dissections are a vital part of scientific research

They allow for the internal structures of organs to be examined so that theories can be made about how they function

There are ethical concerns surrounding dissections

Answer 1

People worry about how the animals for dissections are raised and killed
It goes against the religious beliefs of some individuals

Question 2

Apparatus

Answer 2

Scissors
Scalpel
Tweezers / Forceps
Dissection board
Paper towels
Biological specimen
Pins

Question 3

Method
A lab coat, gloves and eye protection should be worn
To avoid contamination with biological material (which could cause an allergic reaction)
Place the specimen on the dissecting board
Use the tools to access the desired structure

When using the scalpel cut away from your body and keep your fingers far from the blade to reduce the chance of cutting yourself
…………can be used for cutting large sections of tissue (cuts do not need to be precise)
…………enables finer, more precise cutting and needs to be sharp to ensure this

Use pins to move the other sections of the specimen aside to leave the desired structure exposed

Answer 3

Scissors

Scalpel

pins

Question 4

Limitations of heart dissection

Answer 4

It can be hard to see some of the smaller, finer structures within organs

The specimens do not reflect how the tissue would look in a living organism

If only a single specimen is dissected then anomalies found within that specimen may be ignored or glossed over