Chapter 15: Respiratory System Test Questions

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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

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