What are the parts of the repiratory system?
Nose, windpipe and lungs
What are the parts of the circulatory system?
Heart, blood and blood vessels
What gas do we take in?
Oxygen
State 2 gases that is released when we breathe out.
Carbon dioxide and water vapour
What is the function of the hairs in the nose?
To remove dust from the air we breathe in.
What is the function of the lungs?
To take in oxygen and give out carbon dioxide. Oxygen is exchanged for carbon dioxide in the blood.
What is the function of the windpipe?
To transport air (oxygen) to and (release carbon dioxide) from the lungs.
Explain how your breathing rate changes as you exercise.
Our breathing rate increases as we need more oxygen and remove carbon dioxide.
Study the chart below. What happens to our breathing rate as we age?
Our breathing rate decreases as we age.
Describe how fish take in and give out air in the water. (Clue: Start from the mouth)
Water rich in dissolved oxygen enters through the mouth and passes through the gills. As water flows out from the gills, carbon dioxide is removed.
How do plants take in and give out air?
During photosynthesis, plant take in carbon dioxide and give out oxygen in their stomata/tiny openings.
