alveoli are found in the (a) gills (b) spiracles (c) lungs (d) skin
Answers
Answer:
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
Explanation:
Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs).
Answer:
Gills work on the same principle as lungs. In the lungs, there are small sacs called alveoli that are approximately 70% capillaries. These capillaries carry deoxygenated blood from the body. ... Similarly, gills have small rows and columns of specialized cells grouped together called the epithelium.
Instead of lungs, insects breathe with a network of tiny tubes called tracheae. Air enters the tubes through a row of holes along an insect's abdomen. The air then diffuses down the blind-ended tracheae
In six adult human lungs, the mean alveolar number was 480 million (range: 274-790 million; coefficient of variation: 37%). Alveolar number was closely related to total lung volume, with larger lungs having considerably more alveoli.
The skin is composed of two layers: the epidermis and the dermis. Surrounding the alveolar sacs, the lung interstitium is a connective tissue-rich framework for the alveoli and contains the interstitial macrophages. .
Explanation: