General Functions
What is the passageway between the external environment and the lungs?
Air passageway
What is the upper respiratory system composed of?
Nose, nasal cavity, pharynx, and larynx
Windpipe
What is the bronchial tree?
A highly branched system of air-conducting passages
O2 and CO2
What are the two zones of the respiratory system?
The trachea connects the larynx to the what?
Lungs
What is the secondary bronchi?
Lobar bronchi
What are the smell receptors called?
Olfactory receptors
What is the mucous membrane is the respiratory system?
Respiratory mucosa
How do tracheal cartilages connect?
Annular ligaments
True or false, bronchioles have cartilage in their walls
False
Where is sound produced?
Larynx
What is the respiratory mucosa made up of?
Epithelium, basement membrane, and lamina propria
What is the submucosa made of?
Areolar connective tissue
What is the last section of the bronchioles?
Terminal bronchioles
Where does gas exchange occur?
Alveoli
What is mucin?
A protein that increases the viscosity of mucus
What is a tracheotomy?
An incision into the windpipe
How is airflow regulated?
Contraction and relaxation of smooth muscle within walls of bronchi