chapter 23
These are triangular pieces of mostly hyaline cartilage located at the posterior and superior border of the cricoid cartilage.
Arytenoids cartilage
The opening to the pharynx from the mouth is called
Fauces
Which of the following is not a factor that the rate of pulmonary and systemic gas exchange depends on
Force of contraction of diaphragm
This is the sum of the residual and the expiratory reserve volume.
Functional residual capacity
This means the lungs and the chest wall expand easily.
High compliance
Exhalation begins when
Inspiratory muscles relax
Which is a factor that does NOT affect hemoglobin's affinity for oxygen?
Respiratory rate
These are cells of the alveoli that produce surfactant.
Type II alveolar cells
this is primary gas exhchange site
alveolus
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 inner layer of the conducting organs
ciliated pseudostratified columnar epithelium with goblet cells
The conducting zone does NOT act to
clean air of debris conduct air into lungs add water to air warm air (ALL OF THE ABOVE)
When blood pH drops then the amount of oxyhemoglobin _______ and oxygen delivery to the tissue cells ________________.
decrease increase
This structure prevents food or water from entering the trachea
epiglotis
Which of the below tissues maintains open airways in the lower respiratory system?
hyaline cartilage
Which of the following is a passageway for air, food and water?
pharynx
during swallowing which structure rises
pharynx
Which of the following is not part of the upper respiratory system?
trachea
The nose connects with the pharynx through the
Choanae
Which is the dominant method of carbon dioxide transport?
Dissolved in plasma as bicarbonate ions
This is direction of diffusion of gases at the alveoli of the lungs.
Oxygen into blood , Carbon dioxide out of blood
This is direction of diffusion of gases at capillaries near systemic cells.
Oxygen out of blood , Carbon dioxide into blood
The conducting airways with the air that does not undergo respiratory exchange are known as the
Respiratory dead space
Which of the below tissues forms the exchange surfaces of the alveolus?
simple squamous epithelium
pitch is controlled by
tension of vocal cords
this is located anterior to the esophagus and carries air into the bronchi
trachea
