Which of the following statments best descibes how oxyegen entersn the lungs (1 point)
Oxygen enters the lungs through inhalation.
Which of the following statements best describes how oxygen enters the lungs?%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0AOxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.%0D%0AOxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.%0D%0A%0D%0AOxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea.%0D%0AOxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea.%0D%0A%0D%0AOxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles.%0D%0AOxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles.%0D%0A%0D%0AOxygen enters the lungs through the trachea, which branches into the alveoli.
Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi. These bronchi further branch into smaller tubes called bronchioles that lead to the alveoli.
External respiration takes place in the ____________________.%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0Abronchi%0D%0Abronchi%0D%0A%0D%0Atrachea%0D%0Atrachea%0D%0A%0D%0Aalveoli%0D%0Aalveoli%0D%0A%0D%0Adiaphragm
External respiration takes place in the alveoli.
The correct statement that best describes how oxygen enters the lungs is as follows:
1. Through inhalation, oxygen enters the body through the mouth or nose, passing through the nasal cavity or oral cavity.
2. The oxygen then travels down the throat or pharynx and enters the windpipe or trachea.
3. From the trachea, the oxygen further progresses into the bronchi, which are tubes that branch from the trachea into the left and right lungs.
4. Inside the lungs, the bronchi divide and branch into smaller tubes called bronchioles.
5. At the end of the bronchioles, there are tiny sacs called alveoli, which are the main sites of gas exchange.
6. Oxygen diffuses from the alveoli into the surrounding tiny blood vessels called capillaries, where it binds to red blood cells.
7. The oxygen-rich blood then travels back to the heart and is pumped to other parts of the body to provide oxygen to the tissues.