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25 Cards in this Set
- Front
- Back
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What do all the cells in your body need |
Oxygen |
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Where do your cells get oxygen from |
Red blood cells |
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Where do red blood cells get oxygen from |
Lungs |
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What is the main organ of the respiratory system |
The lung |
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What does the respiratory system do |
Exchanges gas with the outside air and releases co2 from the cells into air |
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How many stages are in the respiration system |
2 |
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What happened in stage 1 of respiration |
Are taken into the body and carbon dioxide is released into the outside air |
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What happens in the second stage of respiration |
Oxygen is carried to all the cells in the body and carbon dioxide is carried away from every cell |
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What are the steps in respiration |
1.) Breathing 2.) Gas exchange between the air and blood 3. Gas transport by the blood 4.) Gas exchange between the blood and cells |
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Where does the gas exchange take place |
The alveoli in the lung |
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What is each alveolus surrounded by |
A network of capillaries |
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What does the difference in oxygen concentration do |
Cuz oxygen to diffuse from the and into the blood |
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What do cells in the body have |
A lower concentration |
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Oxygen diffuses from the blood into what |
The cells |
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Carbon dioxide which cells produce in what |
Cellular respiration |
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What is more concentrated in the cells |
Carbon dioxide |
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Carbon dioxide diffuses what |
Out of the cells and into the blood |
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What is mechanical digestion |
Occurs when large chunks of food are broken down into smaller pieces. Which happens in the mouth and stomach |
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What is chemical digestion |
Occurs when large food molecules are broken down into smaller nutrients molecule.this process begins in the mouth and stomach but occurs mostly in the small intestines |
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What is absorption |
The process in which nutrients or other molecules are taken up by the blood |
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After food is broken down into nutrient molecules what happens |
The molecules are absorbed by the blood |
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Where is absorption |
Happens in the small intestine |
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Where can nutrients travel |
In the bloodstream to the cells throughout the body |
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What are food and oxygen in the cells used to make |
ATP |
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How is ATP made |
Through cellular respiration |
