#6.4 Human Physiology - Gas Exchange
Episode 32 of the Simple IB Biology podcast, hosted by Amirali Ghajari, titled "#6.4 Human Physiology - Gas Exchange" was published on October 13, 2023 and runs 17 minutes.
October 13, 2023 ·17m · Simple IB Biology
Summary
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
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