Respiratory System Guided Notes


Notes - The Respiratory system

The major function of the respiratory system is to supply the body with __________ and dispose of ___________________

Respiratory Anatomy

I. The Respiratory system consists of 2 parts. Give the structures in and function of each

A. respiratory zone (organs):

B. conducting zone (passageways):

II. Nose

A. List the 5 functions of the nose






B. Explain why you can get a runny nose on a cold day.

C. What is the function of the conchae?

D. What separates the nasal cavity from the oral cavity?

E. What are the 3 functions of the paranasal sinuses?





III. Pharynx

A. The pharynx serves as a common passageway for ________ and _________.

B. The nasopharynx serves only as a passageway for ________________ . When you swallow, the _______________________ & ____________________ rise upward to prevent food/fluid from entering it. The oropharynx & the laryngopharynx carry

________________, _____________ & _________. Food will be directed posteriorly to the ____________________ while air goes _____________________ to the larynx.

C. List the 3 sets of tonsils.

IV. Larynx

A. The 3 functions of the larynx are




B. Your epiglottis is the ______ tracheal cartilage. When air is flowing into the

_________, the free edge projects ___________________. During swallowing, the

________________ is pulled upward and the ________________is tipped__________________________________ to cover the laryngeal inlet to route

_______________________ into the ______________________.

C. A cough reflex is initiated if _____________________________________________ enters the larynx. This reflex does not work while we are unconscious so it is not a good idea to______________________________________________________________.

V. Trachea

A. What is the function of the ciliated mucosa in the trachea?

B. Smoking diminishes _________________________________ so coughing is the only means of preventing mucus accumulation in the lungs. Smokers should never be given _________________________________________________.


C. The tracheal wall is reinforced internally by _____________________________ so that it is flexible (open part of C) but does not collapse (closed part of C)

D. Purpose of the Heimlich maneuver:

E. Define tracheostomy:

VI. Primary Bronchi

Which bronchi do inhaled foreign objects usually lodge in and why?

VII. Lungs

A. The two lungs are different in shape and size. The left lung has only ______ lobes to give heart some room while the right lung has _______ lobes.

B. The lungs weigh about _________________.

C. The _________________ pleura line the thoracic cavity wall while the __________pleura line the external lung surface.

D. The function of the pleural/serous fluid (in pleural cavity) is to



VIII. Respiratory zone structures

A. The respiratory zone is the only site of ______________________.

B. The alveolar walls are composed of a single layer of_______________________ that is much thinner than a ____________________________. The respiratory membrane has ___________ on one side and ___________________ on the other side.

C. Gas exchanges occur through the process of ___________________________. The approximate surface area available for a healthy person is __________ square meters.

D. Efficient gas exchange requires a moist membrane so ___________________ cells secrete a __________________________________ that coats the membrane.


End of Quiz #1 - Know your diagrams also


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