Topic 6.4 Gas Exchange Understandings, Applications & Skills Survey

Rate your knowledge or ability to complete each of these understandings, applications and skills on a 1-5 basis, with 1 being the lowest and 5 the highest rating.
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A red asterisk (*) indicates required questions.

  1. Ventilation maintains concentration gradients of oxygen and carbon dioxide between air in alveoli and blood flowing in adjacent capillaries.*
    1 2 3 4 5


  1. Type I pneumocytes are extremely thin alveolar cells that are adapted to carry out gas exchange.*
    1 2 3 4 5


  1. Type II pneumocytes secrete a solution containing surfactant that creates a moist surface inside the alveoli to prevent the sides of the alveolus adhering to each other by reducing surface tension.*
    1 2 3 4 5


  1. Air is carried to the lungs in the trachea and bronchi, and then to the alveoli in bronchioles.*
    1 2 3 4 5


  1. Muscle contractions cause the pressure changes inside the thorax that force air in and out of the lungs to ventilate them.*
    1 2 3 4 5


  1. Different muscles are required for inspiration and expiration because muscles only do work when they contract.*
    1 2 3 4 5


  1. Application: Causes and consequences of lung cancer.*
    1 2 3 4 5


  1. Application: Causes and consequences of emphysema.*
    1 2 3 4 5


  1. Application: External and internal intercostal muscles and diaphragm and abdominal muscles, as examples of antagonistic muscle action.*
    1 2 3 4 5


  1. Skill: Monitoring of ventilation in humans at rest and after mild and vigorous exercise.*
    1 2 3 4 5





Linda Kilch