Bio 3 - Exchange of Materials - Gas Exchange in the Gut

Where is the food you eat broken down?

The gut

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Where do the food molecules need to LEAVE?

The small intestine

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And where do they need to get to?

The bloodstream

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How do they get there?

Active Transport and Diffusion

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Why does food need to be broken down into a soluble form?

Diffusion can only happen in dissolved solutions

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What are the tiny finger like projections on the lining of your small intestine?

Villi

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The small intestine is moist and has a large surface area. What else makes it effective for exchange?

Rich blood supply

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Other cards in this set

Where do the food molecules need to LEAVE?

The small intestine

And where do they need to get to?

How do they get there?

Why does food need to be broken down into a soluble form?

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