Propose why our lungs contain millions of small alveoli instead of two large, lung-sized alveoli. Hint: Why do we have villi in our digestive systems?

why our lungs contain millions of small alveoli instead of two large, lung-sized alveoli.

Both the respiratory system and the digestive system involve the uptake of necessary molecules from an animal’s surroundings. Alveoli are tiny sacs that aid in the exchange of carbon dioxide and oxygen in the lungs. Intestinal villi are tiny projections along the lining of the intestines used to take in nutrients from food passing through.Which system must interact with the respiratory and digestive systems to transport gases and nutrients throughout the body?Ask Studybuddy (Login to use)Group of answer choicesIntegumentaryEndocrineImmuneCirculatory

The alveoli are tiny air sacs in the lungs where gas exchange takes place.

Villi are small structures that contain tiny blood vessels. Villi have very thin walls. Small nutrient particles can cross the villi's thin walls and move into the blood vessels. These particles are then carried in the blood throughout the body.Which part of the digestive system has villi?The small intestine. The small intestine is where most of the nutrient particles are absorbed into the blood.The stomach. The stomach is where most of the nutrient particles are absorbed into the blood.The mouth. The mouth is where most of the nutrient particles are absorbed into the blood.Submit

Which of these facts is true for the bronchioles but not the alveoli?A. large surface areaB. very good blood supplyC. walls are one cell thickD. lined with cilia