Respiratory System Anatomy and Functions Quiz
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Questions and Answers

Which two parts is the respiratory system structurally divided into?

  • Nasal cavity and lungs
  • Upper respiratory system and lower respiratory system (correct)
  • Conducting zone and respiratory zone
  • Trachea and bronchi

What is the primary function of the respiratory system?

  • Facilitating gas exchange (correct)
  • Regulating body temperature
  • Filtering blood
  • Producing hormones

Which structure is NOT part of the conducting zone of the respiratory system?

  • Nose
  • Trachea
  • Alveoli (correct)
  • Bronchi

What is one of the regulatory functions of the respiratory system?

<p>Regulating blood pH (A)</p> Signup and view all the answers

What is the process called that involves the intake of oxygen and elimination of carbon dioxide?

<p>Respiration (D)</p> Signup and view all the answers

Which part of the respiratory system contains the receptors for the sense of smell?

<p>Nose (C)</p> Signup and view all the answers

Which part of the respiratory zone is primarily responsible for gas exchange?

<p>Alveoli (B)</p> Signup and view all the answers

What byproduct of cellular metabolism must be efficiently removed by the respiratory system?

<p>Carbon Dioxide (D)</p> Signup and view all the answers

What is the primary function of the external nose?

<p>To filter and warm air (C)</p> Signup and view all the answers

Which anatomical structure of the pharynx is responsible for receiving air from the nasal cavity?

<p>Nasopharynx (D)</p> Signup and view all the answers

What role does the epiglottis play in the larynx?

<p>Covers the larynx (B)</p> Signup and view all the answers

Which condition is characterized by inflammation of the larynx?

<p>Laryngitis (A)</p> Signup and view all the answers

How does the structure of the right primary bronchus differ from the left primary bronchus?

<p>It is shorter and wider (A)</p> Signup and view all the answers

What is the basic structural change occurring in the bronchial tree during its branching?

<p>Mucous membrane becomes non-ciliated (C)</p> Signup and view all the answers

What is the role of the pleural cavity?

<p>Reduces friction during breathing (B)</p> Signup and view all the answers

Which structure connects the larynx to the trachea?

<p>Pharynx (B)</p> Signup and view all the answers

What is the function of the tonsils located in the pharynx?

<p>Involved in the immune response (B)</p> Signup and view all the answers

Why is the left lung smaller than the right lung?

<p>To accommodate the heart (A)</p> Signup and view all the answers

What is the tidal volume for an average healthy adult?

<p>500 mL (A)</p> Signup and view all the answers

Which measurement indicates the total amount of air that can be inhaled and exhaled, including the reserve volumes?

<p>Total lung capacity (A)</p> Signup and view all the answers

What condition is characterized by decreased FEV 1.0 due to increased airway resistance?

<p>Chronic obstructive pulmonary disease (COPD) (A)</p> Signup and view all the answers

Which law describes the pressure exerted by individual gases in a mixture?

<p>Dalton’s law (C)</p> Signup and view all the answers

What happens when the partial pressure of O2 is lower?

<p>Less O2 is combined with hemoglobin (B)</p> Signup and view all the answers

The chloride shift involves the movement of which ions between blood plasma and red blood cells?

<p>HCO3- and Cl- (D)</p> Signup and view all the answers

Which of the following is NOT a common symptom of asthma?

<p>Frequent coughing during exercise (A)</p> Signup and view all the answers

What percentage of oxygen is transported in the blood bound to hemoglobin?

<p>98.5% (B)</p> Signup and view all the answers

Which respiratory component is primarily responsible for stimulating the contraction of respiratory muscles?

<p>Respiratory center in the brain (A)</p> Signup and view all the answers

In which form is the majority of carbon dioxide transported in the blood?

<p>As bicarbonate ions (HCO3-) (C)</p> Signup and view all the answers

Which type of cell forms the main site of gas exchange in the alveoli?

<p>Type I alveolar cell (B)</p> Signup and view all the answers

What is the primary function of surfactant secreted by type II alveolar cells?

<p>Reduce surface tension in alveoli (C)</p> Signup and view all the answers

What triggers inhalation according to Boyle's law?

<p>Decrease in alveolar pressure (C)</p> Signup and view all the answers

Which muscles are primarily responsible for quiet inhalation?

<p>Diaphragm and external intercostals (A)</p> Signup and view all the answers

Exhalation is primarily considered a passive process because it relies on what?

<p>Elastic recoil of chest wall and lungs (D)</p> Signup and view all the answers

What role do alveolar macrophages play in the respiratory system?

<p>Remove fine dust and debris from alveolar space (C)</p> Signup and view all the answers

How does airway resistance affect pulmonary ventilation?

<p>It decreases with increased lung volume (B)</p> Signup and view all the answers

What are the two sets of arteries that supply blood to the lungs?

<p>Pulmonary and bronchial arteries (C)</p> Signup and view all the answers

What is the primary purpose of pulmonary ventilation?

<p>To inhale and exhale air to and from the lungs (D)</p> Signup and view all the answers

What is the role of compliance in relation to the lungs?

<p>Measures the ability of the lungs to expand (B)</p> Signup and view all the answers

What happens to alveolar pressure during exhalation?

<p>It increases compared to atmospheric pressure (D)</p> Signup and view all the answers

Which of the following is a component of the respiratory membrane?

<p>Capillary endothelium (B)</p> Signup and view all the answers

Which structure do the pulmonary arteries deliver blood to?

<p>Alveoli (D)</p> Signup and view all the answers

During strenuous breathing, how much can the diaphragm descend?

<p>10 cm (A)</p> Signup and view all the answers

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