Oxygen enters the blood in the
(1 point)
Responses
bronchi.
bronchi.
pharynx.
pharynx.
larynx.
larynx.
alveoli.
To determine where oxygen enters the blood, we need to understand the respiratory system. The respiratory system is responsible for the exchange of gases, where oxygen enters the bloodstream and carbon dioxide is removed.
When we breathe in, the air travels through our nose or mouth and enters the respiratory tract. From there, it goes through the pharynx, which is a tube-like structure located at the back of the throat.
Next, the air passes through the larynx, also known as the voice box, which houses the vocal cords and helps produce sound.
After that, the air moves into the trachea, commonly known as the windpipe. From the trachea, it branches into two tubes called bronchi, where each bronchus enters into one lung.
Finally, in the lungs, air reaches the alveoli, which are small air sacs surrounded by blood capillaries. It is in the alveoli where the exchange of oxygen and carbon dioxide takes place.
Based on this information, it is in the alveoli where oxygen enters the blood.