10 Questions
Where does gas exchange occur in the lungs of mammals and reptiles?
Alveoli
What is the largest airway that communicates with the external environment?
Trachea
What is the function of the respiratory system in animals and plants?
Gas exchange
In which structures does the respiratory surface get internalized in land animals?
Linings of the lungs
What are the microscopic air sacs with a rich blood supply called in birds?
Atria
What are the microscopic air sacs in the lungs called in mammals and reptiles?
Alveoli
Which organ branches in the middle of the chest into the two main bronchi?
Trachea
In which organisms is the respiratory surface internalized as linings of the lungs?
Land animals
What brings the air into close contact with the blood in the lungs?
Rich blood supply in air sacs
What are the air sacs called in birds where gas exchange occurs?
Atria
Study Notes
Respiratory System Overview
- The function of the respiratory system in animals and plants is to facilitate the exchange of oxygen and carbon dioxide.
Respiratory Tract
- The trachea is the largest airway that communicates with the external environment.
- The trachea branches in the middle of the chest into the two main bronchi.
Gas Exchange
- In mammals and reptiles, gas exchange occurs in the lungs.
- In birds, gas exchange occurs in the air sacs.
Respiratory Surface
- In land animals, the respiratory surface gets internalized in the lungs.
- In mammals and reptiles, the microscopic air sacs in the lungs are called alveoli.
- In birds, the microscopic air sacs are called air capillaries.
Lungs
- The respiratory surface is internalized as linings of the lungs in mammals, reptiles, and birds.
- The walls of the alveoli bring the air into close contact with the blood in the lungs.
Birds
- The air sacs in birds where gas exchange occurs are called air capillaries.
- Air capillaries are microscopic air sacs with a rich blood supply.
Test your knowledge of the respiratory system with this quiz! Explore the anatomy and physiology of breathing, gas exchange, and respiratory organs in animals and plants. Brush up on your understanding of respiratory surfaces and their adaptations across different organisms.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
