Multiple Choice Questions

what conditions or scenarios increases the respiratory rate?
  • as bicarbonate ions in the plasma
  • oropharynx
  • acidosis
  • alveoli
what inhibits/reduces the respiratory rate
  • as the direct initiator of the cough reflex
  • intrapleural pressure is higher than intrapulmonary pressure
  • The pharyngotympanic (auditory) tube drains into the nasopharynx.
  • stimulation of stretch receptors in the lungs
What is the primary form in which oxygen is carried in blood?
  • simple squamous epithelium
  • respiratory bronchioles
  • partial pressure of oxygen in the air
  • chemically bound to hemoglobin
Which of the following pressures must remain negative to prevent lung collapse?
  • dissolved in plasma
  • intrapleural pressure
  • rising CO2 levels
  • external respiration: CO2 diffuses into the blood stream
what secretes a fluid containing surfactant
  • type I cells
  • simple squamous epithelium
  • type II cells
  • alveolar ducts
What is it when no exchange of gases occurs
  • type I cells
  • stimulation of stretch receptors in the lungs
  • chemically bound to hemoglobin
  • segmental bronchi
Which of the following is a conducting zone structure?
  • partial pressure of oxygen
  • rising CO2 levels
  • terminal bronchiole
  • intrapleural pressure
Which of the following plays a role in removing particles such as dust from inspired air?
  • partial pressure of oxygen in the air
  • partial pressure of oxygen
  • C-shaped cartilage rings
  • ciliated mucous lining in the nose
The respiratory membrane consists of 3 layers: capillary endothelium, fused basement membrane and alveolar epithelium consisting of what?
  • lymphocytes
  • type I cells
  • anemic hypoxia
  • type II cells
From which structures do oxygen molecules move from the lungs to the blood?
  • Alveolibecause Alveoli are tiny sacs in the lungs surrounded by capillaries. The alveoli are where oxygen diffuses from the lungs to the blood.
  • alveolar macrophages
  • as the direct initiator of the cough reflex
  • alveoli
The loudness of a person's voice depends on the ________.
  • as the direct initiator of the cough reflex
  • force with which air rushes across the vocal folds
  • paranasal sinuses: surface for odor receptors
  • routing air and food into proper channels
what forms a simple squamous epithelium in the alveoli
  • type I cells
  • segmental bronchi
  • simple squamous epithelium
  • type II cells
what is it where the respiratory zone of the lungs begins
  • as bicarbonate ions in the plasma
  • respiratory bronchioles
  • simple squamous epithelium
  • segmental bronchi
In pneumothorax, the lung collapses because ______.
  • external respiration: CO2 diffuses into the blood stream
  • intrapleural pressure is higher than intrapulmonary pressure
  • The pharyngotympanic (auditory) tube drains into the nasopharynx.
  • intrapleural pressure
If the transpulmonary pressure equals zero, what will happen to the lung?
  • dissolved in plasma
  • lungs will collapse
  • terminal bronchiole
  • intrapleural pressure
Which of the following regions contains the opening of a canal that equalizes pressure in the middle ear?
  • partial pressure of oxygen
  • nasopharynx
  • intrapulmonary pressure
  • intrapleural pressure
In children with infant respiratory distress syndrome (IRDS), the walls of the alveoli cling to each other and make them difficult to inflate. It is common in babies born prematurely. What cells in these infants are NOT fully developed and are NOT doing their job?
  • type II alveolar cells
  • The paranasal sinuses
  • lungs will collapse
  • type I cells
The respiratory membrane is a combination of ________.
  • alveolar ducts
  • alveolar and capillary walls and their fused basement membranes
  • intrapleural pressure is higher than intrapulmonary pressure
  • force with which air rushes across the vocal folds
Which form of CO2 transport accounts for the least amount of CO2 transported in blood?
  • rising CO2 levels
  • dissolved in plasma
  • anemic hypoxia
  • C-shaped cartilage rings
The adenoids normally destroy pathogens because they contain ______.
  • acidosis
  • lymphocytes
  • Epinephrine
  • epiglottis
Jane had been suffering through a severe cold and was complaining of a frontal headache and a dull, aching pain at the side of her face. What regions are likely to become sites of secondary infection following nasal infection?
  • paranasal sinuses: surface for odor receptors
  • type II alveolar cells
  • intrapleural pressure
  • The paranasal sinuses
Which pressure is the result of the natural tendency of the lungs to decrease their size (because of elasticity) and the opposing tendency of the thoracic wall to pull outward and enlarge the lungs?
  • The paranasal sinuses
  • intrapulmonary pressure
  • intrapleural pressure
  • partial pressure of oxygen
Which form of hypoxia reflects poor O2 delivery resulting from too few RBCs or from RBCs that contain abnormal or too little hemoglobin?
  • Pharynx
  • intrapleural pressure
  • anemic hypoxia
  • partial pressure of oxygen
What type of epithelial tissue forms the walls of the alveoli?
  • type I cells
  • simple squamous epithelium
  • chemically bound to hemoglobin
  • ciliated mucous lining in the nose
The walls of the alveoli are composed of two types of cells, type I and type II alveolar cells. The function of type II alveolar cells is to ________.
  • terminal bronchiole
  • secrete surfactant
  • alveolar macrophages
  • segmental bronchi
The palatine tonsils are found in which of the following regions?
  • terminal bronchiole
  • oropharynx
  • alveoli
  • Pharynx
Which muscles, when contracted, would increase the volume of air in the thoracic cavity?
  • diaphragm and external intercostals
  • ciliated mucous lining in the nose
  • paranasal sinuses: surface for odor receptors
  • routing air and food into proper channels
what are cuboidal cells
  • lymphocytes
  • type I cells
  • type II alveolar cells
  • type II cells
The indentation on the medial surface of each lung through which pulmonary and systemic blood vessels, bronchi, lymphatic vessels, and nerves enter and leave is called the __________.
  • False
  • hilum
  • True
  • Pharynx
__________ pressure, the difference between the intrapulmonary and intrapleural pressures, prevents the lungs from collapsing.
  • nasopharynx
  • intrapleural pressure
  • alveolar macrophages
  • Transpulmonary
In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells. True or false?
  • True
  • False
What is NOT a benefit of breathing through the nose?
  • force with which air rushes across the vocal folds
  • chemically bound to hemoglobin
  • routing air and food into proper channels
  • destruction of pathogens entering the nasopharynx
What is the most common method of carbon dioxide transport?
  • routing air and food into proper channels
  • chemically bound to hemoglobin
  • as bicarbonate ions in the plasma
  • as the direct initiator of the cough reflex
Which of the following maintains the patency (openness) of the trachea?
  • partial pressure of oxygen
  • rising CO2 levels
  • C-shaped cartilage rings
  • intrapleural pressure
The main site of gas exchange is the ________.
  • oropharynx
  • False
  • alveoli
  • type II cells
During pleurisy, the inflamed parietal pleura of one lung rubs against the inflamed ______.
  • partial pressure of oxygen in the air
  • visceral pleura of the same lung
  • partial pressure of oxygen
  • ciliated mucous lining in the nose
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Multiple Choice Questions
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