Question

Порівняйте склад вдихуваного та видихуваного повітря і дайте відповідь на запитання. - Чому вміст кисню у видихуваному повітрі зменшився? - Чому вміст вуглекислого газу у видихуваному повітрі збільшився? - Чому вміст азоту у видихуваному повітрі майже не змінився?

Answer 1

Тому що вдихається кисень поребляется м'язами і органами (йде на процес дихання в клітці). А вуглекислий газ, що видихається нами, є результатом клітинного дихання. Зміст азоту майже не змінюється, тому що він не майже не потрібно нашому організму, як кисень

Answer 2

Comparison of Inhaled and Exhaled Air Composition

When comparing the composition of inhaled and exhaled air, there are several key differences. Let's address each question individually:

1. Why has the oxygen content decreased in exhaled air?

The decrease in oxygen content in exhaled air can be attributed to the process of respiration. When we inhale, oxygen-rich air enters our lungs and diffuses into the bloodstream. This oxygen is then utilized by our cells for various metabolic processes, such as energy production. As a result, the oxygen content in the air we exhale is significantly reduced. Instead, exhaled air contains a higher concentration of carbon dioxide, which is a waste product of cellular respiration.

2. Why has the carbon dioxide content increased in exhaled air?

The increase in carbon dioxide content in exhaled air is a direct result of cellular respiration. During this process, cells break down glucose and other nutrients to produce energy. One of the byproducts of this metabolic process is carbon dioxide. The carbon dioxide produced in our cells diffuses into the bloodstream and is transported back to the lungs. From there, it is exhaled out of the body. Therefore, the exhaled air contains a higher concentration of carbon dioxide compared to inhaled air.

3. Why has the nitrogen content in exhaled air remained relatively unchanged?

Unlike oxygen and carbon dioxide, the nitrogen content in the air we breathe remains relatively constant throughout the respiratory process. Nitrogen makes up the majority of the Earth's atmosphere, accounting for approximately 78% of its composition. When we inhale, we take in air from the environment, which contains a significant amount of nitrogen. During respiration, the oxygen is utilized by our cells, and the carbon dioxide is produced as a waste product. However, nitrogen is not directly involved in these metabolic processes and is therefore not significantly altered. As a result, the nitrogen content in exhaled air remains relatively unchanged.

In summary, the oxygen content in exhaled air decreases due to its utilization by our cells during respiration. The carbon dioxide content increases as a byproduct of cellular respiration. On the other hand, the nitrogen content in exhaled air remains relatively constant since it is not directly involved in metabolic processes.

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