Answer :
To sequence the route that gases follow during respiration, we can follow these steps:
1. Inhalation:
- The process starts with breathing in air through the nose or mouth.
- The air then travels through the pharynx, which is the part of the throat behind the mouth and nasal cavity.
2. Conduction Zone:
- From the pharynx, the air moves into the trachea, which is also known as the windpipe.
- Next, the air enters the bronchi, which are the two main airways that lead into the lungs.
3. Respiratory Zone:
- The bronchi further divide into smaller tubes called bronchioles, which eventually end in tiny air sacs known as alveoli.
- It is in the alveoli where the exchange of gases occurs, with oxygen entering the bloodstream and carbon dioxide being removed.
4. Exhalation:
- After the exchange of gases, the carbon dioxide is carried back through the respiratory system in reverse order.
- The carbon dioxide exits the body through exhalation, where it is released back into the atmosphere.
By following this sequence, you can understand the path that gases take during respiration, from the initial inhalation of oxygen to the exhalation of carbon dioxide.
1. Inhalation:
- The process starts with breathing in air through the nose or mouth.
- The air then travels through the pharynx, which is the part of the throat behind the mouth and nasal cavity.
2. Conduction Zone:
- From the pharynx, the air moves into the trachea, which is also known as the windpipe.
- Next, the air enters the bronchi, which are the two main airways that lead into the lungs.
3. Respiratory Zone:
- The bronchi further divide into smaller tubes called bronchioles, which eventually end in tiny air sacs known as alveoli.
- It is in the alveoli where the exchange of gases occurs, with oxygen entering the bloodstream and carbon dioxide being removed.
4. Exhalation:
- After the exchange of gases, the carbon dioxide is carried back through the respiratory system in reverse order.
- The carbon dioxide exits the body through exhalation, where it is released back into the atmosphere.
By following this sequence, you can understand the path that gases take during respiration, from the initial inhalation of oxygen to the exhalation of carbon dioxide.
