The gas exchange surfaces in a mammalian lung are organized into structures that look like clusters of hollow grapes.The hollow,grape-like structures are the________.

Question

Quizplus · Accepted Answer

Alveoli are the gas exchange structures in mammalian lungs that are organized into clusters of hollow grapes. Spiracles are openings on the surface of some insects for gas exchange, lamellae are found in fish gills, papulae are small projections on the surface of some animals, and bronchi are the main branches of the airway in the respiratory system.

The Gas Exchange Surfaces in a Mammalian Lung Are Organized