Podcast
Questions and Answers
What enables maximum oxygen absorption in mammals during gas exchange?
What enables maximum oxygen absorption in mammals during gas exchange?
- Small surface area and low blood supply
- Low surface area and high blood supply
- Thick diffusion pathway and low blood supply
- Large surface area and thin diffusion pathway (correct)
What is the function of the trachea in the mammalian gaseous exchange system?
What is the function of the trachea in the mammalian gaseous exchange system?
- To store oxygen for later use
- To transport air from the lungs to the nose
- To warm, humidify and filter the air we breathe (correct)
- To exchange oxygen and carbon dioxide
Where does gas exchange occur in the mammalian respiratory system?
Where does gas exchange occur in the mammalian respiratory system?
- In the diaphragm
- In the trachea
- In the alveoli (correct)
- In the bronchi
What is the importance of a steep concentration gradient in the alveoli?
What is the importance of a steep concentration gradient in the alveoli?
What is the benefit of a large surface area in the alveoli?
What is the benefit of a large surface area in the alveoli?
What is the role of blood supply in the alveoli?
What is the role of blood supply in the alveoli?
What is the main function of the ciliated epithelial cells in the trachea?
What is the main function of the ciliated epithelial cells in the trachea?
What is the main difference between the bronchi and the bronchioles?
What is the main difference between the bronchi and the bronchioles?
What is the primary function of the goblet cells in the trachea?
What is the primary function of the goblet cells in the trachea?
What is the main function of the smooth muscle in the bronchioles?
What is the main function of the smooth muscle in the bronchioles?
What is the main function of the trachea in the mammalian gaseous exchange system?
What is the main function of the trachea in the mammalian gaseous exchange system?
What is the primary gaseous exchange surface in humans?
What is the primary gaseous exchange surface in humans?
What is the primary site of gaseous exchange in humans?
What is the primary site of gaseous exchange in humans?
What is the characteristic of the walls of the alveoli?
What is the characteristic of the walls of the alveoli?
What is the direction of oxygen diffusion in the alveoli?
What is the direction of oxygen diffusion in the alveoli?
What is the approximate number of alveoli in each lung?
What is the approximate number of alveoli in each lung?
What happens to the concentration of carbon dioxide in the alveoli during expiration?
What happens to the concentration of carbon dioxide in the alveoli during expiration?
What maintains the steep concentration gradient of oxygen in the alveoli?
What maintains the steep concentration gradient of oxygen in the alveoli?
