1. Tardigrade
  2. Question
  3. Biology
  4. A number of very thin, irregular-walled and vascularised bag-like structures are called as

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A number of very thin, irregular-walled and vascularised bag-like structures are called as

NTA AbhyasNTA Abhyas 2020Breathing and Exchange of Gases

Solution:

Each lung, performing gaseous exchange, consists of a small balloon-like unit called an alveolus. The alveolus is lined by simple squamous epithelium. There are around 480 millions of very thin, irregular-walled, vascularised bag-like structures called alveoli in the human lungs.