+
4 Tutorials that teach Animals: Human Respiratory System
Take your pick:
Animals: Human Respiratory System

Animals: Human Respiratory System

Author: Nathan Lampson
Description:

When we breathe, our respiratory system intakes oxygen and exhales carbon dioxide. In this tutorial, you will learn about the function and structure of the human respiratory system, and see how different muscles, such as the lungs and diaphragm, work together to help us breathe and make sounds.  Concepts such as alveoli, bronchi and lungs are crucial to the study of basic science.

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

 

The respiratory system's job is to move oxygen from outside the body (in the environment) into the body and to exhale waste (water, carbon dioxide).

 

The respiratory system begins with the nose.  Air is drawn in through the nose and debris in the air are trapped in mucus.  The process of drawing air into the respiratory system is called inhalation.

 

Air drawn in through the nose makes its way to the trachea.  The trachea is a tube (known as the windpipe) that has ridges to strengthen it and prevent it from folding shut.  Tiny hairs in the trachea clean particles out of the air to prevent them from entering farther into the body.

 

The bronchi is an area where the trachea splits into two passage ways that travel to the left and right lungs.

 

Lungs collect oxygen from the air and move it into the bloodstream so that it can be transported throughout the body.  Inside the lungs, bronchi split into smaller tubes called bronchioles.  Branches of bronchioles eventually end in tiny sacs called alveoli.

This image labels complex features of the respiratory system.  Important features to note include the trachea, bronchi (left and right), alveoli, and lungs.