Which of the following statements best describes how oxygen enters the lungs?
(1 point)
O Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.
• Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea.
• Oxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles.
• Oxygen 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, which lead to the lungs.
Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.
To determine how oxygen enters the lungs from the given options, we need to understand the anatomy of the respiratory system.
First, let's look at each option:
1. Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.
2. Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea.
3. Oxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles.
4. Oxygen enters the lungs through the trachea, which branches into the alveoli.
Now, let's break it down:
The trachea, also known as the windpipe, is a tube that connects the mouth and nose to the lungs. It is divided into two main tubes called the bronchi, one leading to each lung. The bronchi further divide into smaller tubes called bronchioles, which continue to branch out into even smaller respiratory passageways. Finally, the bronchioles terminate in small air sacs called alveoli, which are responsible for the exchange of oxygen and carbon dioxide.
By examining the options, we can determine that the correct statement is:
"Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs." (Option 1)
This accurately represents the flow of oxygen through the respiratory system, starting from the trachea and ending in the lungs.