PAG 02 - Dissection

Question 1

What can be observed when feeling the walls of the 4 chambers of the heart?

Answer 1

The walls of the atria are thinner than the ventricles, and the wall of the left ventricle is thicker than the right ventricle.

Question 2

State an observable difference between veins and arteries.

Answer 2

The walls of arteries are thicker, veins have valves and a larger lumen.

Question 3

Why are plant tissues stained before they are observed?

Answer 3

So that different tissues can appear as different colours to be more easily identified.