Respiratory System

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Which of the following is NOT a conducting zone action?

Clean air of debris, conduct air into the lungs, add water to air, warm air.

Which of the following is NOT a factor that determines the rate of pulmonary and systemic gas exchange?

All of these are factors that determine the rate of pulmonary and systemic gas exchange

Which of the following is the primary gas exchange site?

Alveolus

The gas law that describes the pressure changes that occur during pulmonary ventilation is?

Boyle's Law

The point where the trachea divides into right and left primary bronchi is a ridge called

Carina

Which of the following is the dominant method of carbon dioxide transport?

Dissolved is plasma as bicarbonate ions

Which structure prevents food or water from entering the trachea?

Epiglottis

Exhalation begins when

Inspiratory muscles relax

Which of the following is NOT a factor that affects pulmonary ventilation?

Lung compliance, surface tension of alveolar fluid, elastic recoil of the chest wall and lungs, airway resistance

Which of the following indicates the direction of diffusion of gases at the alveoli of the lungs?

Oxygen into blood, Carbon dioxide out of blood

Which of the following is a passageway for air, food and water?

Pharynx

Which of the following is a factor that does NOT affect hemoglobin's affinity for oxygen?

Respiratory rate

Which of the following is NOT part of the upper respiratory system?

Trachea

Which structure is located anterior to the esophagus and carries air to the bronchi?

Trachea

Which of the following are cells of the alveoli that produces surfactant?

Type II alveolar cells

Which of the below tissue provides the functions of the inner layer of the conducting organs?

ciliated pseudostratified columnar epithelium with goblet cells

When blood pH drops, the amount of oxyhemoglobin____ and oxygen delivery to the tissue cells ____.

decreases, increases

Which of the following is NOT a factor that the rate of pulmonary and systemic gas exchange depends on?

force of contraction of diaphragm

Which of the following 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

Which of the below tissues forms the exchange surfaces of the alveolus?

simple squamous epithelium


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