Human Respiratory System Overview

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What is the function of intercostal muscles in the respiratory system?

To separate the heart and lungs

To make air rush in through the mouth and nose

To help with gas exchange in the alveoli

To control the expansion and contraction of the lungs (correct)

How do ribs contribute to breathing?

By helping to carry oxygenated blood

By separating the heart and lungs

By contracting to pull the ribs up and out (correct)

By exchanging gases in the alveoli

What happens when the diaphragm muscle contracts?

Air rushes in through the mouth and nose (correct)

Ribs move up and blood cells arrive at capillaries

The chest gets smaller and air flows out

Oxygen binds to red blood cells

What is the function of the trachea in the respiratory system?

Transporting air from the nose and mouth to the lungs Signup and view all the answers

Where are the alveoli located in relation to the bronchioles?

At the end of each bronchiole Signup and view all the answers

How does gas exchange occur inside the alveoli?

By diffusion between the walls of capillaries and the air in alveoli Signup and view all the answers

What is the main purpose of alveoli in the respiratory system?

To exchange gases with blood through diffusion Signup and view all the answers

How are alveoli designed to facilitate gas exchange efficiently?

By being moist and close together Signup and view all the answers

What happens at the end of each bronchiole in the respiratory system?

A cluster of alveoli is present Signup and view all the answers

Why do lungs have millions of bronchioles and alveoli?

To allow for efficient exchange of oxygen and carbon dioxide Signup and view all the answers

Human Respiratory System Overview

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Questions and Answers

What is the function of intercostal muscles in the respiratory system?

How do ribs contribute to breathing?

What happens when the diaphragm muscle contracts?

What is the function of the trachea in the respiratory system?

Where are the alveoli located in relation to the bronchioles?

How does gas exchange occur inside the alveoli?

What is the main purpose of alveoli in the respiratory system?

How are alveoli designed to facilitate gas exchange efficiently?

What happens at the end of each bronchiole in the respiratory system?

Why do lungs have millions of bronchioles and alveoli?

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