Ch 25
This is the primary gas exchange site within the lung:
Alveolus
Which of the following is not part of the upper respiratory system?
trachea
The passageway that ends at air sacs in the lungs is the:
Bronchiole
How is oxygen transported through the blood?
bound to hemoglobin
This is located anterior to the esophagus and carries air to the bronchi.
trachea
These are two triangular pieces of mostly hyaline cartilage located at the posterior and superior border of the cricoid cartilage and attached to the true vocal cords:
Arytenoids cartilage
Which is the dominant method of carbon dioxide transport?
Dissolved in plasma as bicarbonate ions
When blood becomes more acidic:
Hemoglobin releases oxygen more easily
Exhalation begins when
Inspiratory muscles relax
The nose connects with the throat through the:
Internal snare
The portion of the pharynx that opens to the mouth is called the :
Oropharynx
This is direction of diffusion of gases at the alveoli of the lungs.
Oxygen into blood, Carbon dioxide out of blood
The conducting airways with the air that does not undergo respiratory exchange are known as the
Respiratory dead space
Pitch is controlled by
Tension of the vocal chords
These are cells of the alveoli that produce surfactant.
Type II alveolar cells
The point where the trachea divides into right and left primary bronchi is a ridge called
carina
Which of the below tissues provides the functions of the lining of the walls of the conducting organs?
ciliated pseudostratified columnar epithelium with goblet cells
This structure prevents food or water from entering the trachea.
epiglottis
This is the sum of the residual and the expiratory reserve volume.
functional residual capacity
Which of the below tissues maintains open airways in the lower respiratory system?
hyaline cartilage
This is direction of diffusion of gases at capillaries near systemic cells.
oxygen out of blood, carbon dioxide into blood
During swallowing, which structure rises?
pharynx
Which of the following is a passageway for air, food and water?
pharynx
Which is a factor that does NOT affect hemoglobin's affinity for oxygen?
respiratory rate
Which of the below tissues forms the exchange surfaces of the alveolus?
simple squamous epithelium