Human Gas Exchange System Flashcards
Label the gas exchange system
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How is the trachea (windpipe) adapted for human gas exchange
It has cartilage rings that are very tough so support the trchea when it opens
How is the brochi adapted for human gas exchange
The bronchi is just a thinner version of the trachea which branches into two (going to lungs)
How is the bronchioles adapted for human gas exchange
What’s a disadvantage of their adaptation
They are very small and carry air to alveoli.
They can collapse because they have not supporting cartilage
How is the alveoli adapted for human gas exchange
They are very thin and the have a large surface area to volume ratio. Therefore efficient gas exchange
How is the capillaries adapted for human gas exchange
They are all over the alveoli. Oxygen diffuses into them so carbon dioxide is exhaled
the alveolar epithelium has flattened cells/ its 1 cell thick so how adapted for human gas exchange
It has a short diffusion distance
the alveolar epithelium is folded so how adapted for human gas exchange
It has a large surface area
the alveolar epithelium is permeable so how adapted for human gas exchange
Allows diffusion of CO2 and Oxygen
the alveolar epithelium is moist so how adapted for human gas exchange
Gasses can dissolve for diffusion
the alveolar epithelium has a good blood supply from the large network of capillaries so how adapted for human gas exchange
Maintains the concentration gradient
