(3) Breathing and gas exchange Flashcards
1
Q
What are the bronchi?
A
The tubes leading from the trachea to the lungs.
2
Q
What are the bronchioles?
A
They are the tubes that are divided from the bronchi that lead to alveoli.
3
Q
What are alveoli?
A
They are microscopic air sacks, it is here that gas exchange with blood.
4
Q
What do the walls of the trachea and the bronchi contain?
A
Rings of cartilage.
5
Q
What are the pleural membranes?
A
Thin, moist membranes separate the lungs from the inside of the thorax.
6
Q
How does the body keep the airways clean?
A
1) By secreting mucus
2) By using cilia
7
Q
What is ventilation?
A
Moving air in and out of lungs.
8
Q
How does carbon monoxide affect the blood’s ability to carry oxygen?
A
It bonds to the hemoglobin much better than oxygen can, thus reducing the amount of oxygen the blood can carry.
