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Questions and Answers
The respiratory system is a biological system consisting of specific organs and structures used for ______ exchange
The respiratory system is a biological system consisting of specific organs and structures used for ______ exchange
gas
Gas exchange in the lungs occurs in millions of small air ______; in mammals and reptiles these are called alveoli, and in birds they are known as atria
Gas exchange in the lungs occurs in millions of small air ______; in mammals and reptiles these are called alveoli, and in birds they are known as atria
sacs
These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the ______
These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the ______
blood
These air sacs communicate with the external environment via a system of ______, or hollow tubes, of which the largest is the trachea
These air sacs communicate with the external environment via a system of ______, or hollow tubes, of which the largest is the trachea
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The two main bronchi enter the lungs where they branch into progressively narrower secondary and tertiary ______
The two main bronchi enter the lungs where they branch into progressively narrower secondary and tertiary ______
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Study Notes
Respiratory System
- The respiratory system is a group of organs and structures responsible for gas exchange.
Gas Exchange
- Gas exchange in the lungs happens in tiny air sacs called alveoli (mammals and reptiles) and atria (birds).
Blood Supply
- The alveoli or atria have a plentiful blood supply, bringing air into close contact with the blood.
Air Tubes
- The air sacs are connected to the outside environment via a network of tubes, called bronchi.
- The largest bronchus is called the trachea.
- The trachea branches into smaller secondary and tertiary bronchi inside the lungs.
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Description
Test your knowledge of the respiratory system with this quiz! Explore the anatomy, physiology, and gas exchange processes in animals and plants. Discover how different organisms adapt to their environment for respiration.
