The Respiratory System Quiz

Which of the following is NOT a function of the respiratory system?

What are the microscopic air sacs in the lungs called in mammals and reptiles?

Which organ in the respiratory system is responsible for bringing the air into close contact with the blood?

What is the largest airway in the respiratory system?

In which organisms is the respiratory surface internalized as linings of the lungs?

Functions of the Respiratory System

Functions include gas exchange, regulation of blood pH, and olfaction (sense of smell).
A function that is NOT typically associated with the respiratory system is digestion or nutrient absorption.

Microscopic Air Sacs

Microscopic air sacs in the lungs of mammals and reptiles are called alveoli.
Alveoli are crucial for facilitating gas exchange between air and blood.

Organ for Gas Exchange

The organ responsible for bringing air into close contact with blood is the alveoli, located in the lungs.
Capillaries surround the alveoli, allowing oxygen and carbon dioxide to diffuse rapidly between air and blood.

Largest Airway

The trachea is the largest airway in the respiratory system.
It branches into bronchi, leading into smaller airways and eventually the alveoli.

Internal Respiratory Surfaces

In mammals and reptiles, the respiratory surface is internalized as linings of the lungs.
This adaptation allows for more efficient gas exchange in terrestrial environments.

Take this quiz to test your knowledge about the respiratory system and its importance in gas exchange. Learn about the anatomy, physiology, and adaptations of this vital biological system.