Respiration and the respiratory system in humans

In aerobic respiration, what happens to the food which is broken down?
Its energy is released for use
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What is the usual food molecule to be respired?
Glucose
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Give the equation for aerobic respiration
Glucose+Oxygen ----> Carbon Dioxide+Water+Energy
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When does anaerobic respiration take place?
When oxygen is in short supply or absent and during intense activity
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Give the equation for anaerobic respiration
Glucose ----> Lactic Acid + Energy
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what percentage of oxygen do we inspire?
21
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What percentage of oxygen to we expire?
16
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What percentage of Carbon dioxide do we inspire?
0.04
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What percentage of carbon dioxide do we expire?
4
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What percentage of nitrogen do we inspire and expire?
79
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Trachea
windpipe- leads from the nasal cavity, mouth and nose and towards the lungs (strengthened by cartilage and rings)
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Bronchi
Each Bronchi leads to one lung
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Alveoli
Where oxygen enters the lungs and Carbon dioxide is removed
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Lungs
Organ made up of bronchi, alveoli and the tissue surrounding them
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Ribs
Protect the lungs and help with breathing
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Diaphragm
Sheet of muscle underneath the lungs which help to breathe
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How does mucus do to prevent lung infections?
Traps dust and microbes
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What does cilia do?
Move back and forth constantly to push the mucus up to the trachea
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What do carcinogens do?
Cause cancer
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What does tar do?
Clogs the bronchi and alveoli
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What does nicotine do?
Damages the lungs
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What does carbon monoxide do?
Makes it hard for red blood cells to carry oxygen
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Other cards in this set

Card 2

Front

What is the usual food molecule to be respired?

Back

Glucose

Card 3

Front

Give the equation for aerobic respiration

Back

Preview of the front of card 3

Card 4

Front

When does anaerobic respiration take place?

Back

Preview of the front of card 4

Card 5

Front

Give the equation for anaerobic respiration

Back

Preview of the front of card 5
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