Podcast
Questions and Answers
Which structures are the main specialized exchange surfaces in humans?
Which structures are the main specialized exchange surfaces in humans?
- Alveoli and Villi (correct)
- Lungs and alveoli
- Bronchioles and small intestines
- Root hair cells and leaves
What is the function of alveoli in humans?
What is the function of alveoli in humans?
- To absorb carbon dioxide
- To absorb nutrients like glucose and amino acids
- To absorb water and mineral ions
- To exchange oxygen and carbon dioxide (correct)
What is the importance of having a large surface area in specialized exchange surfaces?
What is the importance of having a large surface area in specialized exchange surfaces?
- Blocks the substances from diffusing across
- Allows for more molecules to diffuse across at the same time (correct)
- Reduces the diffusion distance
- Maintains a concentration gradient
Why is a good blood supply important for animal exchange surfaces?
Why is a good blood supply important for animal exchange surfaces?
Flashcards
Specialized Exchange Surfaces
Specialized Exchange Surfaces
Structures in the body that facilitate the exchange of substances, like oxygen and nutrients.
Alveoli Function
Alveoli Function
Alveoli are tiny air sacs in the lungs that exchange oxygen and carbon dioxide between the air and blood.
Villi Function
Villi Function
Villi are tiny finger-like projections that increase the surface area of the small intestine to maximize nutrient absorption.
Large Surface Area Importance
Large Surface Area Importance
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Blood Supply Importance
Blood Supply Importance
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