Chapter 23 Alcendor

The nasal cavity, pharynx, and larynx constitute the ________ portion of the airway.

• conducting

• exchange

• respiratory

• sinus

Tuberculosis results from an infection by the bacterium

• Clostridium difficile.

• Staphylococcus aureus.

• Mycobacterium tuberculosis.

• Vancomycin-resistant streptococcus.

Harry suffers from cystic fibrosis and has severe breathing difficulties. His problems result

from

• genetic mutation in cilia production.

• laryngospasms.

• thick secretions that are difficult to transport.

• lack of neural control of respiration.

The beating of the cilia of the respiratory passages in the direction of the pharynx forms a(n)

• debris filter.

• mucus escalator.

• respiratory rhythmicity center.

• smooth slick surface allowing particles to slide.

The nasopharynx transitions into the oropharynx at the level of the

• hard palate.

• soft palate.

• cribriform plate.

• internal nares.

Which of the following organs is not part of the lower respiratory system?

• pharynx

• trachea

• larynx

• bronchi

Functions of the nasal cavity include all of the following except

• filtering the air.

• warming the air.

• humidifying the air.

• housing tonsils.

The openings to the nasal cavity are the

• external nares.

• internal nares.

• nasal meatuses.

• nasal conchae.

The palatine tonsils lie in the walls of the

• nasopharynx.

• oropharynx.

• laryngopharynx.

• larynx.

The ________ is lined by stratified squamous epithelium.

• nasopharynx

• trachea

• oropharynx

• larynx