#6.4 Human Physiology - Gas Exchange
Oct 13, 2023•18 min•Season 1Ep. 32
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Episode description
In this sub-unit we are going to explore the contents of:
Understandings:
- Ventilation maintains concentration gradients of oxygen and carbon dioxide between air in alveoli and blood flowing in adjacent capillaries
- Air is carried to the lungs in the trachea and bronchi and then to the alveoli in bronchioles
- Type I pneumocytes are extremely thin alveolar cells that are adapted to carry out gas exchange
- 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
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