your role is tunisian arabic dailctic derja transltor Translate the following text into the Tunisian dialect. Ensure the output is structured as 'Question: ... Answer: ...'. Please capture the nuances of the Tunisian dialectic Arabic. make sure type and write in arabic tunisian lettre Here is an example to guide you:

Question: شنو اسمك؟
Answer: اسمي جون.

Now, translate the following:

Question: Question: -  Once in the lungs, oxygen is moved into the bloodstream and carried through your body - At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide - Your bloodstream then carries this waste gas back to the lungs where it is removed from the blood stream and then exhaled - Your lungs and respiratory system automatically perform this vital process, called gas exchange -   What might be the first step of the process?
Answer:
Answer: The first step in the process of gas exchange, also known as respiration, involves inhalation or the intake of oxygen-rich air into the lungs. This intricate process can be broken down into several smaller steps, providing a more comprehensive understanding of the beginning of gas exchange:

1. Initiation of breath: The brainstem, particularly the medulla oblongata and the pons, monitors the levels of carbon dioxide, oxygen, and the acidity of the blood. When the concentration of carbon dioxide increases, the medulla sends a signal to the diaphragm and intercostal muscles to initiate the inhalation process.

2. Diaphragm and intercostal muscles contraction: The diaphragm, a dome-shaped muscle situated below the lungs, contracts and flattens downward in response to the signal from the medulla. Simultaneously, the intercostal muscles contract, causing the ribcage to expand outwards. The combination of these two muscular movements enlarges the thoracic cavity, creating a negative pressure inside the chest cavity relative to the atmospheric pressure.

3. Air intake through the respiratory organs: Due to the pressure difference created by the expansion of the thoracic cavity, air rushes into the respiratory system through the nose and/or mouth. The hair, mucus, and nasal passages filter, warm, and humidify the inhaled air before it continues its journey through the pharynx and larynx.

4. Passage through the trachea: The filtered, warmed, and humidified air moves through the trachea, which is lined with mucus-producing goblet cells and ciliated cells. These cells help to trap and remove any remaining foreign particles or potential pathogens, ensuring the air entering the lungs is as clean as possible.

5. Division in bronchi and bronchioles: The trachea divides into two main branches called bronchi, which further subdivide into smaller bronchi and eventually into tiny tubes called bronchioles. The air continues to flow through this network within the lungs.

6. Reaching the alveoli: The bronchioles terminate in millions of tiny air sacs called alveoli, which are covered in a dense network of capillaries. It is in these alveoli that the actual gas exchange process begins, as oxygen diffuses from the air into the capillaries and gets bound to the hemoglobin in red blood cells.

In summary, the first step of the gas exchange process involves the inhalation of oxygen-rich air initiated by the central nervous system, followed by the contraction of respiratory muscles, and the passage of air through the various structures of the respiratory system until it reaches the alveoli for the upcoming exchange of gases.