Question

question 9
1 pts
if the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately_____ml.
50
100
150
200
question 10
1 pts
external respiration can be defined as:
the exchange of gases between the lung and the blood capillaries in the lung.
pulmonary ventilation.
the exchange of gases between the blood capillaries and the tissue cells.
both a and b.
question 11
1 pts
gas exchange, the lungs main and vital function, takes place in the:
bronchioles.
secondary bronchi.
primary bronchi.
alveoli.

Explanation:

• Question 9: Anatomical dead - space is approximately \(1/3\) of the tidal volume. Given a tidal volume of \(500\) ml, \(500\times\frac{1}{3}\approx150\) ml.
• Question 10: External respiration is the exchange of gases between the lung and the blood capillaries in the lung. Pulmonary ventilation is just the movement of air in and out of the lungs. The exchange of gases between blood capillaries and tissue cells is internal respiration.
• Question 11: Gas exchange in the lungs occurs in the alveoli. Bronchioles, secondary bronchi, and primary bronchi are mainly for air - conduction.

Answer:

• Question 9: 150
• Question 10: the exchange of gases between the lung and the blood capillaries in the lung
• Question 11: alveoli