overall importance:
- needed to live
- gas exchange
- happens in the lungs and blood vessels
- exhalation
- carbon dioxide, oxygen
- circulation
- nasal passage
- para nasal sinuses
- throat, pharynx
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Having the respiratory system inside the body with all its components is a evolutionary advantage because, the body can easily process the oxygen its taking it to increase blood flow and allowing healthy muscle growth. the respiratory system. In a simple version of the respiratory system such as the earthworm, crayfish, and frog; they perform respiration through permeable skin. allowing efficient gas exchange in and out of its skin membrane to breath. In a more complex organism like the white rat, it has lungs and branch like fingers inside of its lungs to quickly separate oxygen and expel carbon dioxide in a fluid motion billions of times a day to live. Disadvantages to these functions of breathing is that the air at many times can become contaminated and prohibit proper breathing through skin or lungs. Just like humans the rats lungs are sensitive to its environment bad weather to pollution can throw the respiratory out of commission and in return the organism will get discomfort. Asthma is an example, where the lungs tend to seize up and cause breathing to get heavy as if someone put a brick on your lungs.
Differences ad similarities between organisms:
EARTHWORM:
- permeable skin
- breathes through skin
- mucus and water
- simple resp. system no lungs exc.
- diffusion
- must remain in wet soil (environment)
CRAYFISH:
- gills
- oxygen and carbon dioxide exchanged in water
- no lungs exc.
- bronchial chamber
- leg movement creates circulation
- free floating system
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GRASS FROG:
- breathes through skin
- mucus and water on skin
- must remain in moist environment
- permeable skin
- diffusion
- contains blood capillaries on skin surface
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WHITE RAT:
- a lot like humans
- lungs, throat, larynx
- inside of body
- blood flow and muscle growth
- ribs and diaphragm create movement
Frog lungs? Crayfish gills? Don't neglect them!
ReplyDeleteAlso, you might want to talk about how surface area relates to gas exchange.
WHY do we need oxygen, and where does the carbon dioxide come from that we exhale?