The Human Respiratory System and Breathing.
Paragraphs 7-1 through 7-8.
After completing this lesson, you should be able to:
7-1. Define respiration, external respiration, internal
respiration, and breathing.
7-2. Identify the main subdivisions of the respiratory
system and their functions.
7-3. Describe the external nose, nasal chambers,
pharynx, larynx, trachea, bronchi, alveoli, lungs,
and pleural cavities.
7-4. Describe breathing and breathing mechanisms.
After completing the assignment, complete the
exercises at the end of this lesson. These exercises
will help you to achieve the lesson objectives.