Respiratory System Flashcards
Primary functions
To provide oxygen to body tissues for cellular respiration, Remove the waste product carbon dioxide, Help to maintain acid-base balance
Secondary functions
Sensing odors, Speech production, Straining (during childbirth or coughing)
Conducting Zone
Moves air in and out of the lungs
Respiratory Zone
Moves gases in and out of the blood
Nose
The major entrance and exit for the respiratory system
Pharynx
part of the throat situated immediately posterior to the mouth and nasal cavity, and superior to the esophagus and larynx
Larynx
cartilaginous structure that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs. The larynx is also involved in sound production and protecting the trachea against food aspiration.
Trachea
a tube that connects the pharynx or larynx to the lungs, allowing the passage of air
Alveolar duct
a tube composed of smooth muscle and connective tissue, which opens into a cluster of alveoli
Alveolus
one of the many small, grape-like sacs that are attached to the alveolar ducts
Alveolar sac
a cluster of many individual alveoli that are responsible for gas exchange