Question

Which of the following statements best describes how oxygen enters the lungs?
(1 point)
Responses

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.

Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea.
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 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 the alveoli.

Answer 1

Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.

Explanation: Air travels down the trachea, which splits into the left and right primary bronchi; those branch into bronchioles and finally into alveoli where gas exchange occurs.