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20 terms

Chapter 15: Respiratory System Test Questions

STUDY
PLAY
create turbulence in the air to trap small particulates in mucus
Which of the following is the function of the nasal conchae?
Oropharynx
Which of the following is the portion of the pharynx that receives both air and food?
Pharynx
Which of the following is the common passageway shared by the respiratory and digestive system?
epiglottic cartilage
The elastic cartilage that covers the opening to the larynx during swallowing is the
layrnx
The vocal folds are located in the
2
The left lung consists of how many lobes?
alveoli
The actual sites of gas exchange within the lungs are the
the gas pressure in the lungs is less than outside pressure
Air moves into the lungs because
movement of air into and out of the lungs
Pulmonary ventilation refers to the
the volume of the thoracic cavity decreases
When the diaphragm muscles relax
bound to hemoglobin
Most of the oxygen transported by the blood is
bicarbonate ions
Most of the carbon dioxide in the blood is carried by
Carbon dioxide
Which of the following is the most important chemical regulator of respiration?
12 to 18 respirations per minute
The average respiratory rate in a normal adult is
alveolar collapse
Lack of surfactant cells in the lungs of newborn infants will result in
the passage from the pharynx to the larynx
The glottis is
3
The right lung is divided into how many lobes?
760
Normal air pressure is equal to how many millimeters of mercury?
lipids and proteins
Surfactant is formed by a mixture of
tidal volume
The volume of air that enters or leaves during a single respiratory cycle is called