HARD
AS and A Level
IMPORTANT
Earn 100
Describe in detail that can be seen in a TEM of a ciliated epithelial cell that cannot be seen under high power with a light microscope.
Important Questions on Gas Exchange
HARD
AS and A Level
IMPORTANT
Explain how alveoli are adapted for gas exchange.
HARD
AS and A Level
IMPORTANT
The electron microscope was needed to confirm that each alveolus is completely surrounnded by epithelial cells. Explain why?
HARD
AS and A Level
IMPORTANT
Draw the low power plan diagram of trachea.
HARD
AS and A Level
IMPORTANT
Draw the low power plan diagram of bronchus.
HARD
AS and A Level
IMPORTANT
The following structures are found in the walls of the gas exchange system.
1 Cilia
2 Elastic fibres
3 Smooth muscle cells
4 Goblet cells
5 Squamous epithelial cells.
Which would be found in the lining of an alveolus.
HARD
AS and A Level
IMPORTANT
Cartilage is found in which structure?
HARD
AS and A Level
IMPORTANT
Which of the following is not a role of elastic fibres in the gas exchange system?
HARD
AS and A Level
IMPORTANT
The given diagram shows the alveoli:
Name the cell A, B and C.
