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.
5 answers
Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.
External respiration takes place in the ____________________.
(1 point)
Responses
bronchi
bronchi
trachea
trachea
alveoli
alveoli
diaphragm
diaphragm
(1 point)
Responses
bronchi
bronchi
trachea
trachea
alveoli
alveoli
diaphragm
diaphragm
External respiration takes place in the alveoli.
Oxygen is carried by the ______________, which is part of the red blood cell.
Oxygen is carried by the hemoglobin, which is part of the red blood cell.