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: Q: Excretion is the process of removing excess water and wastes from the body. what are the main organs of excretion?   A:
Answer: Excretion is indeed a vital process that helps maintain the body's internal balance and prevents the buildup of harmful substances within the system. This process primarily involves the removal of metabolic waste products, excess water, salts, and other substances that the body no longer needs. The main organs responsible for excretion in the human body are the kidneys, lungs, skin, and the liver. 

1. Kidneys: The kidneys are considered the primary excretory organs. They are a pair of bean-shaped organs located towards the lower back, on either side of the spine. They play a significant role in filtering and cleaning the blood. As blood flows through the kidneys, they remove wastes and excess substances such as water, salts, and urea. These waste materials form a liquid called urine, which is transported from the kidneys to the bladder through narrow tubes called ureters. The bladder stores the urine temporarily until it is eliminated from the body through the urethra. The kidneys also help regulate the body's fluid balance and blood pressure by excreting or retaining water as needed.

2. Lungs: The lungs are responsible for the excretion of gaseous wastes, particularly carbon dioxide (CO2), which is a byproduct of cellular respiration. When cells produce energy from the nutrients we consume, they generate CO2 as a waste product. This CO2 gets dissolved in the blood and gets transported to the lungs. During the process of respiration, we inhale oxygen (O2) and exhale carbon dioxide. The lungs help expel CO2 from the body, ensuring that it doesn't accumulate to toxic levels.

3. Skin: The skin, in addition to serving as a protective barrier, also plays a role in excretion through the process of perspiration (sweating). Sweat glands, which are found all over the skin, secrete sweat, a fluid that consists of water, dissolved salts, and organic compounds such as urea and lactic acid. Sweating not only helps to regulate body temperature but also aids in removing small amounts of waste products. Moreover, the skin sheds dead cells, which contain waste materials accumulated during cellular processes, and eliminating them from the body.

4. Liver: The liver is a large, vital organ responsible for various metabolic processes, including detoxification and excretion. It filters the blood, removing harmful substances like alcohol, drugs, and toxins absorbed from the digestive tract. One of its primary functions is the production and secretion of bile, a digestive fluid that helps break down fats and carries waste products, cholesterol, and bilirubin (a byproduct of red blood cell degradation) to the small intestine. These waste materials are then mixed with undigested food and form feces, which is eventually eliminated from the body through the rectum during defecation.

In summary, the main organs of excretion – kidneys, lungs, skin, and liver – work together to ensure that the body efficiently removes excess water, waste products, and toxic substances. By doing so, these organs contribute to overall health and maintain the body's delicate internal balance.