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Questions and Answers
The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and ______.
The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and ______.
plants
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
Gas exchange in the lungs occurs in millions of small air sacs; in mammals and reptiles these are called ______, and in birds they are known as atria.
Gas exchange in the lungs occurs in millions of small air sacs; in mammals and reptiles these are called ______, and in birds they are known as atria.
alveoli
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.
These enter the lungs where they branch into progressively narrower secondary and tertiary ______.
These enter the lungs where they branch into progressively narrower secondary and tertiary ______.
Which of the following is NOT a function of the respiratory system?
Which of the following is NOT a function of the respiratory system?
Which term is used to describe the microscopic air sacs in the lungs of mammals and reptiles?
Which term is used to describe the microscopic air sacs in the lungs of mammals and reptiles?
What is the largest hollow tube in the respiratory system?
What is the largest hollow tube in the respiratory system?
Which of the following factors does NOT influence the anatomy and physiology of the respiratory system?
Which of the following factors does NOT influence the anatomy and physiology of the respiratory system?
What is the primary purpose of the respiratory surface in land animals?
What is the primary purpose of the respiratory surface in land animals?
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