WorksheetsGas Exchange in Alveoli PreLess
Total questions: 22
Worksheet time: 11mins
Exhaled air is warmer than atmospheric air
Atmospheric air is more saturated with water vapour than expired air
Which gas has the highest amount in the atmospheric air?
Oxygen level in exhaled air is _______ than the inhaled air
The amount of nitrogen in inhaled air is _________ in exhaled air
higher
doubled
lower
The amount of carbon dioxide in inhaled air is _________ in exhaled air
Which is the correct order of air entering the lungs?
Nose or mouth, bronchioles, bronchi, trachea, alveoli
Nose or mouth, bronchioles, trachea, bronchi, alveoli
Nose or mouth, trachea, bronchi, bronchioles, alveoli
Which of the organs below does the gas exchange happens?
trachea
bronchi
bronchioles
alveoli
The other name for alveoli is __________
Lung Grapes
Why do we breathe?
To maximise the efficiency of gas exchange, the alveoli must be?
thick-walled and surrounded by a less network of capillaries
thin-walled and surrounded by a less network of capillaries
What is the purpose of having millions of tiny alveoli in our lungs?
To store excess oxygen
Guess the average amount of alveoli in our lungs
700 million
Air in each alveolus is separated from the blood by only ______ cell layer/layers
What are the walls separating the air inside the lung and blood?
Capillary walls
Blood leaving the body tissues is high in ________, and blood leaving the lung is high in ________
Which is the correct order of flow of deoxygenated blood?
heart -> lung -> body tissue
body tissues -> lung -> heart
body tissues -> heart -> lung
lungs -> heart -> body tissues
Which is the correct order of flow of oxygenated blood?
Body tissues, heart, lungs
Lungs, heart, body tissues
Heart, lungs, body tissues
Body tissues, lungs, heart
The movement of oxygen and carbon dioxide across the alveolar and capillary walls is caused by _______
diffusion gradient
filtration gradient
volume gradient
pressure gradient
When the concentration of carbon dioxide in the blood is higher than the alveolus carbon dioxide concentration, what happens to the carbon dioxide?
It diffuses from the blood into the alveolus
When the concentration of oxygen in the blood is lower than the alveolus oxygen concentration, what happens to the oxygen?
Carbon dioxide and oxygen exchange happens simultaneously
