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Draw a large labelled diagram of the human breathing tract and label the following parts; larynx, trachea, bronchi, bronchiole - Leaving Cert Biology - Question e - 2008
Question e
Draw a large labelled diagram of the human breathing tract and label the following parts; larynx, trachea, bronchi, bronchiole. What is the role of alveoli in the lu... show full transcript
Worked Solution & Example Answer:Draw a large labelled diagram of the human breathing tract and label the following parts; larynx, trachea, bronchi, bronchiole - Leaving Cert Biology - Question e - 2008
Step 1
Draw a large labelled diagram of the human breathing tract and label the following parts; larynx, trachea, bronchi, bronchiole.
Answer
To create a labeled diagram of the human breathing tract, include the following parts:
- Larynx: Located at the top of the trachea, responsible for sound production.
- Trachea: A tube that connects the larynx to the bronchi, facilitating airflow.
- Bronchi: The two main branches from the trachea that lead into each lung.
- Bronchioles: Smaller branches of the bronchi, further distributing air within the lungs.
In your diagram, ensure these parts are appropriately labeled and accurately depicted.
Step 2
What is the role of alveoli in the lungs?
Answer
The role of alveoli in the lungs is to facilitate the exchange of gases. They are tiny air sacs that increase the surface area for diffusion, allowing oxygen to enter the bloodstream while carbon dioxide is expelled from it. This exchange occurs efficiently due to the thin walls of the alveoli, which enable rapid diffusion of gases.
Step 4
Suggest a possible cause of the breathing disorder that you have named in (iii) and state how it may be treated.
Answer
A possible cause of asthma is allergic reactions to environmental triggers such as pollen, dust mites, or pet dander. Treatment often involves the use of inhalers containing bronchodilators to relieve symptoms, and corticosteroids to reduce inflammation. Avoiding known triggers and having an asthma action plan are also critical for effective management.